Caesar Cipher - Automatic Solver

Caesar: This attempts to solve the caesar cipher by trying all 26 possible shift values and calculating the cross-entropy with English letter frequencies (unigram model). Use the up/down arrows to rotate through the results to see all 26 combinations. Show All Rotations

Caesar Cipher - Rot 5

Caesar Rot 5: Just numbers are rotated (ie: 5 => 0, 3 => 8).

Caesar Cipher - Rot 18

Caesar Rot 18: Both numbers and letters are rotated by 5 and 13 respectively.

Caesar Cipher - Rot 47

Caesar Rot 47: All ASCII characters are rotated.

Caesar Cipher - Rot 123 (Forward)

Caesar Rot 123 (Forward): This special version of the Rot Cipher takes a set of characters and rotates them each forward in incremental order.

Caesar Cipher - Rot 123 (Reverse)

Caesar Rot 123 (Forward): This special version of the Rot Cipher takes a set of characters and rotates them each in decremental order.

The standard Bacon code typically uses A's and B's or 0's and 1's (both are supported by default). However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters for Standard Bacon, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions.

Standard A/B (Distinct)

Standard A/B (Distinct - Inverted)

Standard A/B (I = J and U = V)

Standard A/B (I = J and U = V - Inverted)

Odd / Even (Distinct)

This determines if the bacon was enciphered as odd/even letters or numbers.

Odd / Even (Distinct - Inverted)

Odd / Even (I = J and U = V)

Odd / Even (I = J and U = V - Inverted)

Case Sensitive (Distinct)

Case Sensitive (Distinct - Inverted)

Case Sensitive (I = J and U = V)

Case Sensitive (I = J and U = V - Inverted)

Alphabet Halves A-M & N-Z (Distinct)

Alphabet Halves A-M & N-Z (Distinct - Inverted)

Alphabet Halves A-M & N-Z (I = J and U = V)

Alphabet Halves A-M & N-Z (I = J and U = V - Inverted)

Prime Number / Letter (Distinct)

This determines if the bacon was enciphered as a prime number from 0 - 9 or if a letter falls on a prime number. Example: B = 2, C = 3, G = 7, etc.

Prime Number / Letter (Distinct - Inverted)

Prime Number / Letter (I = J and U = V)

Prime Number / Letter (I = J and U = V - Inverted)

Vowels (Distinct)

This determines if the bacon was enciphered by vowels versus consonants.

Vowels (Distinct - Inverted)

Vowels (I = J and U = V)

Vowels (I = J and U = V - Inverted)

Enclosed Letters / Numbers (Distinct)

This determines if the bacon was enciphered by enclosed letters or numbers. Example: A = 0, B = 0, C = 1, D = 0, etc.

Enclosed Letters / Numbers (Distinct - Inverted)

Enclosed Letters / Numbers (I = J and U = V)

Enclosed Letters / Numbers (I = J and U = V - Inverted)

Morse code typically uses dots (.) and dashes (-). However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions. If you have a custom separator between words (besides a space, /, \, or |), enter this in the Key/Alphabet #3 position. If you only have dots and dashes with NO separators, try using the UnMorse tool.

Morse - Normal

Morse - Reverse

Morse - Swapped

Morse - Swapped Reverse

Guess Mode: This attempts to try all 6 different patterns that could exist in this code.

Guess Mode 1

Guess Mode 2

Guess Mode 3

Guess Mode 4

Guess Mode 5

Guess Mode 6

The Abaddon code consists of three characters ¥, µ, and þ. However if your code only consists of 3 characters, it could still be this code if it is obfuscated. To customize the three characters, enter the first one in Key/Alphabet #1, second one in Key/Alphabet #2 position, and third one in the Key/Alphabet #3 position. You might also try rearranging the order of your custom letters just in case.

Abaddon Code

Guess Mode: This attempts to try all 6 different patterns that could exist in this code.

Guess Mode 1

Guess Mode 2

Guess Mode 3

Guess Mode 4

Guess Mode 5

Guess Mode 6

Additive: Each character of the alphabet is assigned a value and a key number within the alphabet is chosen. Each character is added with this key number and the corresponding letter is substituted (mod 26). The values of the alphabet characters start at 0 so A = 0, B = 1, etc. Example the letter M (12th letter) and key 16 would be 12 + 16 = 28. 28 modulo 26 = 2 so the letter C would be chosen. Enter the number in the Num 1 position. If you have a custom alphabet or keyword, put this in the Key/Alphabet #1 position.

ADFGX

ADFGX: Enter the keyword under Key/Alphabet #1. The default 25-character alphabet has J swapped for I. If you have a custom alphabet, enter this under Key/Alphabet #2. To customize this alphabet, see the full ADFGX tool.

ADFGVX

ADFGVX: Enter the keyword under Key/Alphabet #1. The default 36-character alphabet consists of A-Z and 0-9. If you have a custom alphabet, enter this under Key/Alphabet #2. To customize this alphabet, see the full ADFGVX tool.

Affine: Enter an odd number under Num 1 from 1 to 25. Enter any number from 0 to 25 in Num 2. If you have a custom alphabet, enter this in Key/Alphabet #1 (Default is A-Z).

Atbash: This cipher arranges the standard alphabet backwards from Z to A.

The Backslash Code in text form is represented by a backward slash (\), a pipe (|) and a forward slash (/). However if your code only consists of 3 characters, it could still be this code if it is obfuscated. To customize the three characters for the Backslash, enter the first one in Key/Alphabet #1, second one in Key/Alphabet #2 position, and third one in Key/ Alphabet #3 position.

Backslash

Guess Mode: This attempts to try all 6 different patterns that could exist in this code.

Guess Mode 1

Guess Mode 2

Guess Mode 3

Guess Mode 4

Guess Mode 5

Guess Mode 6

Barcode Numbers: Barcodes are composed of both black and white lines and are typically found on product packaging. The 12-digit UPC (Universal Product Code) is used in the US and Canada and consists of 10 middle numbers and two numbers at both ends of the code (with the last one being a check digit). See more details here.

Base Conversion: This attempts to convert the text from different bases (2 to 62) into decimal (Base 10). Sometimes different converters have their letter case swapped so this will give the output showing lower case (a - z) then upper case (A - Z) first and then swap the case and try it again.

Base32

Base32: Base32 uses the characters A - Z and 2 - 7 to make a human-readable output. It uses rough 20% less space than Hexadecimal (base16) but uses roughly 20% more space than base64.

Base58 - Bitcoin

Base58 - Bitcoin: This is an encoding scheme used for Bitcoin addresses designed to reduce visually identical looking account numbers in some fonts. The alphabet consists of 123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz.

Base58 - Flickr

Base58 - Flickr: Flickr uses the same encoding as Bitcoin but their alphabet consists of 123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ

Base58 - Aa1

Base58 - Aa1: This versions puts the numbers at the end and begins with uppercase letters and then lowercase letters. ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz123456789

Base58 - aA1

Base58 - aA1: This versions puts the numbers at the end and begins with lowercase letters and then uppercase letters. abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ123456789

Base64

Base64: This is an encoding scheme commonly used when there is a need to encode binary data to be stored and transferred over media that are designed to deal with textual data.

Base85 (ASCII-85)

Base85 (ASCII-85): This is a coding system created by Paul E. Rutter of Adobe Systems that uses 5 ASCII characters to code 4 bytes (similar to base64 encoding). ASCII 85 is used in PDF file format for example.

The standard Baudot/Murray code uses 0's and 1's. If your code has just two single characters that aren't 0 or 1, it could still be this code if it was obfuscated. To customize the two characters, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions.

Baudot - ITA1

Baudot - ITA1: The original Baudot code was a 5-bit code that became known as the International Telegraph Alphabet No 1 (ITA1).

Baudot - ITA1 (Inverted)

Baudot Murray - ITA2

Baudot Murray - ITA2: In 1901, the Baudot code was improved by Donald Murray to minimize the wear on the machinery. He assigned the most frequently used symbols and letters to the codes with fewest punched holes. This led to the International Telegraph Alphabet No 2 (ITA2) standard.

Baudot Murray - ITA2 (Inverted)

Beaufort - Standard

Beaufort: This is a polyalphabetic substitution cipher that is similar to the Vigenère cipher, only that instead of adding letter values, it calculates the cipher letter by taking the key letter minus the plaintext letter.

Beaufort - Autokey

Beaufort Autokey: Similar to above but this version starts with a relatively-short keyword and appends the message to it.

Beaufort Variant - Standard

Beaufort Variant: Similar to above but the key difference is the encryption is performed like decryption in the Vigenère and decryption is performed like the encryption in the Vigenère.

Beaufort Variant - Autokey

Beaufort Variant Autokey: Similar to the variant above but this version starts with a relatively-short keyword and appends the message to it.

Bifid: The cipher uses a 25-character alphabet that typically has J swapped for I. To customize these swap letters, please set your own at the top under "translate this letter". Also you can choose a period grouping by entering this in the Num 1 position. The default period grouping is the message length.

ASCII to Numbers

ASCII to Numbers: This finds the corresponding ASCII number to text and provides a sum at the end.

Numbers to ASCII

Numbers to ASCII: This converts numbers from 0 to 255 into their corresponding ASCII character. Each set of numbers must be separated by a space.

This section shows each of these number formats converted back into ASCII.

Binary

Decimal

Hexadecimal

Octal

Brainf*ck

Brainf*ck: Brainf*ck is an (unfortunately named) esoteric programming language created in 1993 by Urban Müller. The language consists of eight commands: > < + - . , [ and ].

Ook Ook

Ook Ook: Ook! is a joke programming language created by David Morgan-Mar. It is identical to brainf*ck, except that the instructions are changed into Orangutan words. The Ook! commands are: Ook. Ook?, Ook? Ook., Ook. Ook., Ook! Ook!, Ook! Ook., Ook. Ook!, Ook! Ook? and Ook? Ook!.

Short Ook

Short Ook: A variant of Ook! is called Short Ook! where the Ook are stripped out, leaving the following commands: .?, ?., .., !!, !., .!, !? and ?!.

Decode Burrows Wheeler: This compression algorithm rearranges a character string into runs of similar characters. This process can take a long time depending on the length of the text to decrypt. If the message length is greater than 1,000 characters, you will need to click the Decode button above to run this independent of the other decodes.

The End of File (EOF) character must be unique to the message. The default is "$" but you may enter a custom one in the Pad position.

Caesar Box: The default pad character is "|". If you have a different one, enter that under the Pad box.

Chaocipher: This encryption uses two rotating disks on which is written a custom alphabet. The two disks are identical and linked with a kind of gearing (ratio 1:1) that if a disk is turned clockwise, the other turns counter-clockwise.

The Chinese Code in text form is represented by a dash (-) and a pipe (|). However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters for the Chinese Code, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions. If you have a custom separator between words (besides a space), enter this in the Key/Alphabet #3 position.

Chinese Code - Forward

Chinese Code - Reverse

Clock Code: This encrypts plaintext using numbers on a 12/24-hour clock as in the following image. A colon (:) separates each letter and two zeros separates each word (00).

Columnar Transposition: This involves writing the plaintext out in rows and then reading the ciphertext off in columns. The row length that is used is the same as the length of the keyword with the plaintext being padded to make it fit into the rectangle under the keyword. The columns are now reordered alphabetically and then the ciphertext is read off along the columns.

The default pad character is "X". If you have a custom pad character, enter this in the Pad box above.

Cow: This programming language is an esoteric programming language created by Sean Heber in 2003. It is a Brainf*ck variant designed humorously with Bovinae in mind. Cow has twelve instructions (four more than Brainfuck) and is Turing-complete. Most instructions are moos, only the capitalization varies: mOo, moO, mOO, Moo, and so on. MMM, OOO, oom and OOM are the exceptions. All other character combinations are ignored and treated as comments.

The standard decabit code typically uses "+" and "-". However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters for decabit, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions.

Decabit

Decabit: This code consists of 10 characters of "+" and "-" that directly translate to numbers from 0 to 126. These values are then mapped to the corresponding ASCII characters/numbers.

Decabit - Inverted

Digital Root - A1 Z26

Digital Root A1 Z26: This tool works by converting text to its alphanumeric value and uses a recursive function to find the digital root value. Letters arranged with A = 1 and Z = 26.

Digital Root - A0 Z25

Digital Root A0 Z25: Letters arranged with A = 0 and Z = 25.

Digital Root - A26 Z1

Digital Root A26 Z1: Letters arranged with A = 26 and Z = 1.

Digital Root - A25 Z0

Digital Root A25 Z0: Letters arranged with A = 25 and Z = 0.

Digital Root - Vanity

Digital Root Vanity: Letters arranged by the numbers on a phone's keypad. A = 2 and Z = 9.

Digital Root - Scrabble

Digital Root Scrabble: Letters are arranged by the numbers on Scrabble tiles.

Double Transposition: This is basically a columnar transposition followed by another columnar transposition.

Dual Tone Multi Frequency (DTMF): These frequencies are used on a touch tone phone, best known to users as the sound made when pressing a number key.

Dvorak - Two Hands

Dvorak: This converts from Dvorak Simplified keyboard layout into the Qwerty keyboard layout.

Dvorak - Right Hand

Dvorak - Left Hand

Atomic Numbers

Atomic Numbers: These are the matching atomic numbers of the elements.

Atomic Symbols

Atomic Symbols: These are the matching atomic symbols of the elements. This will attempt to match the symbols based on Uppercase and Lowercase characters in the message.

Atomic Names

Atomic Names: These are the matching atomic names of the elements.

Enclosed Loops: This tool is designed to count the enclosed areas in uppercase, lowercase, and numbers. Use a space to separate the groupings. This will count a four (4) to be open and closed separately. Also, beware that some script letters have extra loops such as a cursive "ℊ" that may not be accounted for with this tool. If your data has these extra enclosed areas, modify the output for that section to include the extra count.

The Five Needle Telegraph Code in text form is represented by a backward slash (\), a pipe (|) and a forward slash (/). However if your code only consists of 3 characters, it could still be this code if it is obfuscated. To customize the three characters for this code, enter the first one in Key/Alphabet #1, second one in Key/Alphabet #2 position, and third one in Key/ Alphabet #3 position.

Five Needle Telegraph

Five Needle Telegraph: Also known as the Cooke and Wheatstone telegraph, this code is represented by three characters \ | / in a set of 5. To save space, uncommon letters were omitted in the code so the letters C, J, Q, V, X and Z are not included here.

Guess Mode: This attempts to try all 6 different patterns that could exist in this code.

Guess Mode 1

Guess Mode 2

Guess Mode 3

Guess Mode 4

Guess Mode 5

Guess Mode 6

This cipher uses two 25 letter alphabets where typically J is swapped for I. To customize these swap letters, please set your own at the top under "translate this letter". The default alphabets for both are A-Z without the letter J.

Fractionated Morse: This first converts the plaintext to morse code, then enciphers fixed size blocks of morse code back to letters. This procedure means plaintext letters are mixed into the ciphertext letters i.e. one plaintext letter does not map to one ciphertext letter.

If you have a custom alphabet, enter this in the Key/Alphabet #1 position.

Geocache Number to ID

GC Number to ID: This uses a custom Base-31 conversion to convert the GC Number to or from the GC-ID. The characters used for the Base-31 conversion are 0123456789ABCDEFGHJKMNPQRTVWXYZ (the letters ILOSU are omitted). Example: GCK25B = 156997

Geocache ID to Number

GC ID to Number: This converts the ID number back to the GC format. Example 156997 = GCK25B

Goldbug: From the Edgar Allen Poe book The Gold-Bug, this is a simple substitution cipher using the following letters in the place of A - Z: 52-†81346,709*‡.$();?¶]¢:[

Gronsfeld Standard

Gronsfeld: This cipher is a polyalphabetic cipher (a series of Caesar ciphers) where the shift is determined by numbers (between 0 and 9). It is similar to the Vigenère cipher, but the key uses digits instead of letters.

Gronsfeld Autokey

Gronsfeld Autokey: This version starts with a relatively-short keyword and appends the message to it. For example if the keyword is "QUEEN" and the message is "ATTACK AT DAWN", the key would be "QUEENATTACKATDAWN".

Hodor: Although this is drawn from an esoteric language created as an homage to Hodor from Game of Thrones, this tool incorporates the upper and lower case letters (minus the letters in his name) using the translation tables from that language. It's basically a simple substitution cipher.

Kamasutra: This is a simple substitution cipher where the 26 letters of the alphabet are organized into 13 pairs of characters which are then used to encrypt the text by direct substitution of the letters in the pairs.

The Kenny code consists of a group of 3 letters in a combination of M, F & P. However if your code only consists of 3 characters, it could still be this code if it is obfuscated. To customize the three characters, enter the first one in Key/Alphabet #1, second one in Key/Alphabet #2 position, and third one in the Key/Alphabet #3 position.

Kenny

Guess Mode: This attempts to try all 6 different patterns that could exist in this code.

Guess Mode 1

Guess Mode 2

Guess Mode 3

Guess Mode 4

Guess Mode 5

Guess Mode 6

Keyboard Cipher - QWERTY

QWERTY: This simple substitution cipher maps the keys of a keyboard layout to letters like this: QWERTY = ABCDEF. The keyboard layout is QWERTYUIOPASDFGHJKLZXCVBNM.

Keyboard Cipher - QWERTZ

QWERTZ: This simple substitution cipher maps the keys of a keyboard layout to letters like this: QWERTZ = ABCDEF. The keyboard layout is QWERTZUIOPASDFGHJKLYXCVBNM.

Keyboard Cipher - AZERTY

AZERTY: This simple substitution cipher maps the keys of a keyboard layout to letters like this: AZERTY = ABCDEF. The keyboard layout is AZERTYUIOPQSDFGHJKLWXCVBNM.

Keyboard Coordinates - Function Row Start (A = 42)

Keyboard Coordinates - This allows you to convert QWERTY letters from their coordinate location on the keyboard by rows and columns. It will first look for which row from the top of the keyboard and then which column from the left that the character appears.

Keyboard Coordinates - Number Row Start (A = 32)

Keyboard Coordinates - Letter Row Start (A = 22)

Keyboard Neighbors
Shift Right with A-Z, 0-9, Special Chars

Keyboard Neighbors: This tool allows you to shift letters on a qwerty keyboard right or left.

Keyboard Neighbors
Shift Left with A-Z, 0-9, Special Chars

Keyboard Neighbors
Shift Right with A-Z, 0-9

Keyboard Neighbors
Shift Left with A-Z, 0-9

Keyboard Symbols

Keyboard Symbols: This converts the "[email protected]#$%^&*()" characters to their number equivalent on a QWERTY keyboard.

Keyed Caesar: This is a variation to the standard Caesar cipher but the alphabet is "keyed" by using a word and those letters are moved to the front of the alphabet before the rotation is performed.

Letters Numbers

Letters Numbers: This converts from letters (A - Z) to numbers (1 - 26).

Numbers Letters

Numbers Letters: This converts from numbers (1 - 26) to letters (A - Z). Be sure to put a space or newline between each set of numbers for the tool to work correctly.

Numbers Numerical Words

Numbers Numerical Words: This converts from numbers to spelled out words. Be sure to put a space or newline between each set of numbers for the tool to work correctly.

Numerical Words Numbers

Numerical Words Numbers: This converts from spelled out numerical words to numbers from 0 to 100. Be sure to put a space or newline between each set of words for the tool to work correctly.

Numbers Numerical Words - Alphabetical Order

Numbers Numberical Words - Alphabetical Order: This converts from numbers to numerical words but in alphabetical order of the words. (Example: 51 = One, 100 = Two) Be sure to put a space or newline between each set of numbers for the tool to work correctly. See Graumann.net for more details.

Numerical Words Numbers - Alphabetical Order

Numerical Words Numbers - Alphabetical Order: This converts from numerical words into numbers but in alphabetical order based on the spelling of the word. (Example: One = 51, Two = 100) Be sure to put a space or newline between each set of words for the tool to work correctly. See Graumann.net for more details.

Numbers Spelled Out

Numbers Spelled Out: This takes the numbers in the message (up to 33 digits in length) and spells them out into their word form. Everything that is not 0 - 9 is removed before translating.

Multiplicative: Each character of the alphabet is assigned a value and a coprime key to the length of the alphabet is chosen. Each character is multiplied with this key and the corresponding letter is substituted. Example the letter M (12th letter) and key 3 would be 12 * 3 = 36. 36 modulo 26 = 10 so the letter K would be chosen. To use this, please enter an odd number in the Num 1 position.

Nak Nak: Language translator from duckspeak to human.

Nihilist - 5 x 5

Nihilist 5 x 5: This cipher constructs a polybius square using a mixed alphabet. This is used to convert both the plaintext and a keyword to a series of two digit numbers. These numbers are then added together in the normal way to get the ciphertext, with the key numbers repeated as required.

Enter the keyword in the Key/Alphabet #1 position and polybius alphabet or seed word in the Key/Alphabet #2 position. This verion's polybius square only has 25 characters, with one character swapped for another (Default is "J" for "I"). If your alphabet has a different swap letter, customize this in the "Translate this letter" section above.

Nihilist - 6 x 6

Nihilist - 6 x 6: This version's polybius square contains all letters A - Z and numbers 0 - 9. Enter the keyword in the Key/Alphabet #1 position and polybius alphabet or seed word in the Key/Alphabet #2 position.

Number Pad Lines: This tool lets you convert numbers drawn on a keypad which spells out letters and numbers by the shape. Ex: "T" would be 1328, where you start at the "1" and draw a line through all the numbers in order until you get to the "8", which the final shape would look like a "T".

Numerology - Pathagorean

Numerology - Pathagorean: This cipher uses values for letters and adds them together based on a specific number set. This version splits the standard alphabet every 9th character and numbers them like this: 12345678912345678912345678. (Ex. A = 1, J = 1, S = 1, Z = 8, SUM = 11)

Numerology - Pathagorean (With 0)

Numerology - Pathagorean (With 0): This version is exactly the same as above except it splits the alphabet at every 10th character and numbers them like this: 12345678901234567890123456. (Ex. A = 1, J = 0, S = 9, Z = 6, SUM = 16)

Numerology - Chaldean

Numerology - Chaldean: This version is the same as above except it arranges the alphabet like ABCDEUOFIKGMHVZPJRLTNWQSXY and numbers them like 12345678123456781234561351. (Ex. A = 1, J = 1, S = 3, Z = 7, SUM = 12)

One Time Pad / Vernam: This is an encryption technique that cannot be cracked, but requires the use of a single-use pre-shared key that is no smaller than the message being sent.

Pizzini: This cipher is very similar to the classic Caesar cipher where the alphabet is shifted three letters (A => D, B => E, etc). The difference is the Pizzini cipher assigns those letters to numbers so A = 4, etc. Note: This cipher uses the Latin alphabet of 26 characters. The original version used the Italian alphabet, which only has 21 characters.

The standard Planet barcode typically uses "╻" and "┃" or i's and I's (both are supported by default). However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions.

Planet Barcode

Planet Barcode: The Postal Alpha Numeric Encoding Technique (PLANET) barcode was used by the United States Postal Service to identify and track pieces of mail during delivery.

Playfair: This was the first practical digraph substitution cipher. The technique encrypts pairs of letters (digraphs) instead of single letters as in the simple substitution cipher. It uses a pad character (default is "X") but if you have a custom one, enter this in the Pad position. If you have a custom alphabet or keyword, enter this in the Key/Alphabet #1 position. Typically in this cipher, the letter J is merged with the letter I but you can customize this above in the "Translate this letter" section.

Polybius Square: This is essentially identical to the simple substitution cipher except that each plaintext character is enciphered as 2 ciphertext characters. Since it is based on a 5 x 5 grid, the key must be 5 unique characters long (enter this in the Key/Alphabet #1 position.) If you have a custom alphabet or keyword, enter this in the Key/Alphabet #2 position. Typically in this cipher, the letter "J" is merged with the letter "I" but you can customize this above in the "Translate this letter" section.

Note: The name of this cipher is commonly confused with the Tap/Knock Code. Check that section below as a possibility.

Porta Key: This a polyalphabetic substitution cipher. Where the Vigenère cipher is a polyalphabetic cipher with 26 alphabets, the Porta Key is basically the same except it only uses 13 alphabets.

The standard postnet barcode typically uses "╻" and "┃" or i's and I's (both are supported by default). However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions.

Postnet Barcode

Postnet Barcode: Postal Numeric Encoding Technique (POSTNET) is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars.

Primality

Primality: In math, prime numbers are whole numbers greater than 1 that have only two factors – 1 and the number itself. This attempts to check if a number is a prime number. It will only work for numbers under 16 digits in length.

Prime Factorization

Prime Factorization: This finds which prime numbers multiply together to make the original number. This works for whole numbers between 2 and 2⁵³. It can handle a number up to 9007199254740991.

Quadoo: This is a font that consists of 6 lines intended for the visually impaired. This converts the numbers back into letters.

Railfence: This is a transposition cipher that follows a simple rule for mixing up the characters in the plaintext to form the ciphertext. Enter the number of rows in the Num 1 position (default is 3 rows). If you also have an offset number, enter this in the Num 2 position. Show Railfence Rows 2 - 10

Resistor Code - Numbers to Colors

Resistor Code - Numbers to Colors: On a resistor (electical component), there are colored bands that correlate to a number from 0 to 9. This converts the numbers back to colors.

Resistor Code - Colors to Numbers

Resistor Code - Colors to Numbers: This converts the colors back to numbers. Note: Be sure the colors have a space between them.

Roman Numerals

Roman Numerals: This is a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet. "I": 1, "V": 5, "X": 10, "L": 50, "C": 100, "D": 500 and "M": 1000

Roman Numerals - Chronogram

Chronogram: This is a sentence or inscription in which specific letters (interpreted as numerals) stand for a particular date when rearranged. Example: AMORE MATVRITAS = MMVI = 2006

Route Transposition - Left to Right (With Spaces)

Route Transposition: This cipher rearranges the plaintext letters into columns and rows based on a shape of an imaginary path drawn on a grid, which contains all the message letters.

Route Transposition - Left to Right (No Spaces)

Route Transposition - Right to Left (With Spaces)

Route Transposition - Right to Left (No Spaces)

Route Transposition - Alternating Left to Right (With Spaces)

Route Transposition - Alternating Left to Right (No Spaces)

Running Key: The Running Key cipher has the same internal workings as the Vigenère cipher. The difference lies in how the key is chosen; the Vigenère cipher uses a short key that repeats, whereas the running key cipher uses a long key such as an excerpt from a book.

Scytale: This is based on a transposition method. The diameter of the Scytale can be regarded as the key of the cipher. In Ancient Greece, the belt of the messenger was composed of a stretch of leather which had characters written on the backside. It seemed like a meaningless sequence of characters but when the stretch of leather is winded around a piece of wood with the correct diameter, an encoded message can be read. Enter your columns in the Num 1 position and any custom pad character in the Pad position.

Segment Display - 7

Segment Display: The segment display is not universal and can be assigned different values than what is translated here be default. If your code has different values than what is listed below, you may need to modify your text to fit the default values.

Default 7 Values: A, B, C, D, E, F, and G.

Segment Display - 9

Segment Display 9: Default Values: A, B, C, D, E, F, G, H, and I.

Segment Display - 14

Segment Display 14: Default Values: A, B, C, D, E, F, G1, G2, H, I, J, K, L and M.

Segment Display - 16

Segment Display 16: Default Values: A1, A2, B, C, D2, D1, E, F, G1, G2, H, I, J, K, L and M.

Shadoks Numerals: This uses Base 4 (quaternary) with these 4 words: GA, BU, ZO and MEU, respectively for 0, 1, 2, and 3.

The Slash and Pipe Code in text form is represented by a forward slash (/), a pipe (|) and a backward slash (\). However if your code only consists of 3 characters, it could still be this code if it is obfuscated. To customize the three characters for this code, enter the first one in Key/Alphabet #1, second one in Key/Alphabet #2 position, and third one in Key/ Alphabet #3 position.

Straddling Checkerboard: The straddling checkerboard is a substitution cipher, except that the substitutions are of variable length. The key for a straddling checkerboard is a permutation of the alphabet along with 2 numbers between 0 and 9. Enter the two numbers respectively in Num 1 and Num 2 positions. If you have a custom alphabet or keyword, enter this in Key/Alphabet #1 position (default alphabet is A - Z).

Substitution

Substitution: This is a cipher that consists of substituting every plaintext character for a different ciphertext character. It differs from the Caesar cipher in that the cipher alphabet is not simply the alphabet shifted, it is completely jumbled. Enter the keyword or custom alphabet into Key/Alphabet #1 position.

Albam

Albam: The alphabet used is LMNOPQRSTUVWXYZABCDEFGHIJK.

Carbonaro

Carbonaro: The alphabet used is OPGTIVCHEJKRNMABQLZDUFWXYS.

Tap Code Numbers 5 x 5

Tap Code Numbers 5 x 5: Based on a 5 x 5 grid of letters with K being replaced by C. Each letter is communicated by tapping two numbers: the first designated the row (horizontal) and the second designated the column (vertical).

Tap Code Pattern 5 x 5

Tap Code Pattern 5 x 5: This section chops up the text by spaces and counts the sections to translate into Tap Code. It works for any character just in case the code has been obfuscated but the pattern still exists.

Tap Code Numbers 6 x 6

Tap Code Numbers 6 x 6: Based on a 6 x 6 grid of all letters and numbers. Each character is communicated by tapping two numbers: the first designated the row (horizontal) and the second designated the column (vertical).

Tap Code Pattern 6 x 6

Tap Code Pattern 6 x 6: This section chops up the text by spaces and counts the sections to translate into Tap Code. It works for any character just in case the code has been obfuscated but the pattern still exists.

The Tomtom Code in text form is represented by a forward slash (/) and a backward slash (\). However if your code only consists of 2 characters, it could still be this code if it is obfuscated. To customize the two characters, enter the first one in Key/Alphabet #1 and second one in Key/Alphabet #2 positions. If you have a custom separator between words (besides a space), enter this in the Key/Alphabet #3 position.

Tomtom - Forward

Tomtom - Reverse

Trifid: This cipher uses three tables to fractionate letters into trigrams, mixes the parts of the trigrams and then uses the table to convert the trigrams back to letters again. This cipher uses 27 characters (26 letters plus one pad character). Enter your pad character in the Pad spot above (default is a + sign).

Trithemius: This cipher uses a tabula recta which contains the 26 letters of the from A to Z along the top of each column and repeated along the left side at the beginning of each row. Each row of the square has the 26 letters, shifted one position to the right in a cyclic way as the rows progress downwards. Once B moves to the front, A moves down to the end. This continues for the entire square.

Übchi Transposition - Duplicates Forward

Übchi: This was used by the Germans during World War 1 and is a double columnar transposition cipher. This takes the column order and if there are any duplicates, it arranges them in forward or backward order. This cipher was originally found on Rumkin.com and was created by Tyler Akins.

Enter a column order (or keyword) in the Key/Alphabet #1 position. If you have a custom pad character (default is "X"), put this in the Pad position.

Übchi Transposition - Duplicates Backwards

Unicode Characters

Click the button below to see the the Hex value and description of each Unicode character in the message. This is a copy of the message above but you can modify the text here and it will be used to decode the characters.

Note: Due to the size of the file needed for the unicode decoding, it will copy and open the text below in a new window. View Unicode

This code corresponds to the letters used on the telephone number pad. The number 0 does not correspond to letters and is used as a space in the output. If you have a custom separator, put this in the Num 1 position.

Vanity Method 1: Example "CACHE" in this method would be as follows: 222 2 222 44 33. The decoder extracts and deciphers the numbers from the encrypted text. Vanity Method 2: Example "CACHE" in this method would be as follows: 23 21 23 42 32. This method decrypts in sets of two. Vanity Method 3: Example "CACHE" in this method would be as follows: 2/ 2\ 2/ 4| 3|.

Note: Due to the dictionary size needed to decode T9 encryption, T9 is not supported here. See the T9 Decoder if you think your text might be this code. Example: 43622243 = GEOCACHE.

Vic Cipher: This complex cipher involves a straddling checkerboard and a disrupted double transposition as part of its decryption. In order to use this, you will need two numbers between 1 and 9 (placed in the Num1 and Num2 positions). The default alphabet is A - Z and "." and "/" for a total of 28 characters. If you have a custom alphabet, or a keyword, enter this in the Key/Alphabet #1 position and the custom alphabet will be calculated for you. This cipher may also have a numeric key used to over-encrypt the initial results. The default is empty but if you have one, enter this in the Key/Alphabet #2 position (numbers only).