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  • Geocaching Quick Links - Quickly view or log a geocache by GC number or Trackable (TB) number (even without a premium membership). Search by username or keyword. Look for recently placed geocaches near your current location. There is also a FTF search tool which allows you to choose a state, country or province to look for available first to find (FTF) caches. This launches a search results page on Geocaching.com with results sorted by unfound and oldest unfound.
  • Geocaching Lingo - Huge list of words, phrases and acronyms used by geocachers. If you know of a lingo this is missing, let me know!
  • Games - Game caches placed by CacheSleuth.
  • Contact Me - Questions, comments or suggestions? Shoot me a message.
Multi Decoder

  • Multi Decoder - This tool is designed to solve a wide variety of codes and ciphers. It has spots for keywords, alphabets, numbers, etc and will attempt to solve based on the information put in. The list of supported codes and ciphers is growing periodically so check back often.multisolver multi solver decoder decode tools multidecoder
Map Tools

  • Coordinate Conversion - Convert multiple coordinate formats into other formats quickly. Allows you to map these coordinates in a variety of maps and view a custom Geocache search. This tool currently supports more than a dozen coordinate notations with high accuracy. See the bookmarklets page for a fast shortcut to quickly translate coordinates from any webpage.map mapping coordinates tools notation degree decimal minutes seconds what3words ddm dd dms w3w reverse wherigo day1976 waldmeister 1976 mgrs military grid reference system universal transverse mercator utm plus codes xy geohash gh geohex gh natural area code nac british national grid osgb geo3x3 g3 antipode elevation google map tools
  • Distance & Midpoint Calculator - Takes a variety of coordinate inputs and calculates the distance between them. It gives you the bearing and distance in both feet and meters. Also allows you to map coordinates and get driving directions between them.map mapping coordinates tools map tools
  • Projection Calculator - Allows you to project a waypoint from a given location with bearing and distance. Allows for a variety of distance types.map mapping coordinates tools map tools
  • Incomplete Coordinate Calculator - If you have a set of coordinates that are missing values, this tool will calculate all of the missing coordinate spots and show them on a map. You can also download coordinates into a CSV file or view them in a list. csv list map mapping coordinates tools map tools
  • Batch Convert Coordinates - This tool accepts 10 different coordinate notation types and converts all recognized coordinates into the notation of your choosing.batch convert coordinates map mapping coordinates tools map tools
  • Map Coordinates List - This tool allows you to map a list of coordinates and get the distance between each point. Enter each of your coordinates on a new line, choose what format you want them converted into and click calculate to see them on a map.batch coordinate processing map tools
  • Intersection of 2 Circles - This tool allows you to calculate the intersection of 2 circles and show them on a map. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Intersection of 3 Circles - This tool allows you to calculate the intersection of 3 circles and show them on a map. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Circle Through 3 Points - This tool allows you to calculate the center point and radius of a circle through 3 points. You can also add a moveable marker to see coordinates in a certain location.circumscribing map mapping coordinates tools map tools
  • Center of a Triangle - This tool allows you to calculate the center, area, and perimeter of a triangle. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Trianglation - This tool allows you to calculate an unknown point when 2 points with a bearing are known. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Intersection of a Line and a Circle - This tool allows you to calculate the intersection of a line and a circle and show them on a map. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Intersection of 2 Lines - This tool allows you to calculate the intersection of 2 lines at a bearing and show them on a map. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Intersection of Line Between 4 Points - This tool allows you to calculate the intersection of lines between 4 points and show them on a map. Calculations will be from Coordinates A to B and C to D. If the lines do not connect based on entered coordinates, the tool will check to see if they would connect if extended. If so, "virtual" intersection coordinates will be provided. You can also add a moveable marker to see coordinates in a certain location.map mapping coordinates tools map tools
  • Intersection of a Point with Bearing to a Line - This tool allows you to calculate the intersection of a point with a bearing against a line with 2 points. You can also add a moveable marker to see coordinates in a certain location. You can also add a moveable marker to see coordintes in a certain location.map mapping coordinates tools map tools
  • Cache Placement Helper - Tool that allows you to get your current coordinate readings and view them on a map. You can move the pin around to narrow the results. Offers a variety of coordinate formats and helpful links to quickly create a cache page or view maps in Google.map mapping coordinates tools map tools
Code Tools

  • Abaddon Code - This code consists of three characters ¥, µ, and þ and covers the letters A to Z and a space for a total of 27 characters. It is named after the biblical angel of the abyss.code tools
  • Backslash Code - Tool to convert letters to and from backslash code. Uses groups of three characters consisting of \ | /.\|/ backslash 5 fiveneedletelegraph five needle telegraph slash and pipe tom tom tomtom code tools
  • Baudot-Murray - Converts text Baudot code.5 binary ita1 ita2 international telegraph alphabet code tools
  • Brainfuck & Ook! Code - This tool converts text to and from the programming language Brainfuck and variants of this called Ook! and Short Ook!.bf esoteric urban Müller muller 8 eight > < + - . , [ ] code tools
  • Chinese Code - This code uses dashes and pipes to represent vowels and consonents. Go to Codes --> Chinese Code for an image version.code tools
  • Clock Code - This code encrypts plaintext using numbers on a 12/24-hour clock. A colon (:) separates each letter and two zeros separates each word (00).clock AM PM time hours minutes code tools
  • Colored Squares Code - This code is a simple substitution code in disguise. Each colored square is worth a certain value. Add up the values within each 2 x 2 block (colors are always shown highest to lowest value) and then convert the total to the corresponding letter (A=1, Z=26).code tools
  • Cow Code - The COW programming language is an esoteric programming language created by Sean Heber in 2003. It is a Brainf*ck variant.code tools
  • Decabit Code - The Decabit code consists of 10 characters of "+" and "-" that directly translate to numbers from 0 to 126. These values are mapped to the corresponding ASCII characters/numbers.electric german europe european cpl meter reading code tools
  • Dvorak Qwerty - This tool converts text between a Qwerty keyboard and a Dvorak keyboard.keyboard qerty qwerty azerty dvorak keys code tools
  • Enclosed Areas - Tool that counts the enclosed areas of uppercase, lowercase, and numbers. Example = 3 (a, p, and e).code tools
  • Five Needle Telegraph - Substitution cipher using the characters \ | / in sets of 5 characters. Also known as the Cooke and Wheatstone telegraph.\|/ backslash 5 fiveneedletelegraph five needle telegraph slash and pipe tom tom tomtom code tools
  • GoldBug Code - Converts text GoldBug Code.edgar allen poe code tools
  • Hodor - Based off the character from Game of Thrones, this tool translates upper and lower case letters from an esoteric language named after Hodor.code tools
  • Kenny Code - Converts text Kenny Code.south park southpark 3 letters you killed kenny code tools
  • Letters Numbers - Allows you to convert letters to and from numbers.code tools
  • Morse Code - Tool to convert text Morse Code.unmorse dots dashes dit code tools
  • UnMorse Code - Tool to help solve Morse code that is presented without spaces.no spaces morsecode dots dashes dit code tools
  • Nak Nak (Duckspeak) - This tool allows you to convert human language to and from duckspeak so you may converse with your little feathered friend.code tools esoteric language
  • NATO Alphabet - Tool to convert text the NATO Phonetic Alphabet.code tools
  • Number Pad Lines - Tool that uses lines drawn between the numbers on a keypad to make letters and numbers with the shape.phone vanity code tools
  • Quadoo - Quadoo consists of 6 lines on a grid that translates to text, intended for the visually impaired. This tool converts those lines to numbers from text. See Quadoo code for a visual representation in images.code tools
  • Qwerty Coordinates - This tool allows you to convert QWERTY letters to their coordinate location on the keyboard by rows and columns. The number returned will first look for which row from the top of the keyboard and then which column from the left the character appears. You will have 3 different versions from which to choose.keyboard qerty qwerty azerty dvorak keys code tools
  • Qwerty Shifter - This tool allows you to shift letters on a qwerty keyboard right or left. You can shift up to 47 slots if you include special characters and up to 36 if you exclude them.keyboard qerty qwerty azerty dvorak keys code tools
  • Slash and Pipe Code - Substitution cipher using the characters \ | /.\|/ backslash 5 fiveneedletelegraph five needle telegraph slash and pipe tom tom tomtom code tools
  • Tap (Knock) Code - Converts characters between letters, numbers and dots via a polybius square. This is said to be used by prisoners to communicate with each other.5 code tools
  • Tomtom Code - Substitution cipher using the characters \ | /.\|/ backslash 5 fiveneedletelegraph five needle telegraph slash and pipe tom tom tomtom code tools
  • T9 Code Solver - Tool to solve the phone pad's T9 code using a large dictionary.vanity phone code tools
  • Vanity Code - Code that uses the numbers/letters on a phone pad. Four methods included.code tools
Cipher Tools

  • Additive Cipher - Similar to a Caesar cipher, 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).cipher tools
  • ADFGX Cipher - Tool to convert text using the ADFGX cipher and a custom alphabet.cipher tools
  • ADFGVX Cipher - Tool to convert text using the ADFGVX cipher and a custom alphabet.cipher tools
  • Affine Cipher - Tool to convert text using the Affine cipher and a custom alphabet.cipher tools
  • Albam Cipher - Simple substitution cipher that swaps letters in the alphabet with a different letter in a second alphabet. Similar to Atbash.cipher tools
  • ASCII-85 - This coding system (AKA Base 85) was created by Adobe Systems and uses 5 ASCII characters to code 4 bytes similar to base64.base85 85 paul rutter pdf cipher tools
  • Atbash Cipher - Tool to convert text into Atbash cipher which flips the text from A-Z to Z-A.cipher tools
  • Autokey Cipher - This cipher is a polyalphabetic substitution cipher.Vigenère vigenere cipher tools
  • Bacon Cipher - Converts text Bacon Cipher. Able to decrypt A/B, 0/1, Uppercase/Lowercase, and Atbash style A-M/N-Z encryptions.5 letters AB 01 atbash cipher tools
  • Beaufort Cipher - This is a polyalphabetic substitution cipher that is similar to the Vigenère cipher, only that instead of adding letter values, it calculates the cipherletter by taking the keyletter minus the plaintextletter.cipher tools
  • Variant Beaufort Cipher - This is a polyalphabetic substitution cipher that is similar to the Vigenère cipher. The key differences is the encryption is performed like decryption in the Vigenère and decryption is performed like the encryption in the Vigenère.german cipher tools
  • Bifid Cipher - This cipher combines the Polybius square with transposition and uses fractionation to achieve diffusion.cipher tools
  • Burrows-Wheeler Transform - The Burrows–Wheeler transform rearranges a character string into runs of similar characters. This is useful for compression and more importantly, the transformation is reversible, without needing to store any additional data except the position of the first original character.burrows wheeler transform bwt cipher tools
  • Caesar Box Cipher - The Caesar Box is a cipher that is based on a transposition method. The cipher is encrypted by writing the text in columns (padding with extra characters to make them even) and then reading off the text by rows. This is not a Caesar cipher.scytale cipher tools
  • Carbonaro Cipher - Simple substitution cipher used by a secret society in Naples called the Carboneria. Similar to Atbash.cipher tools
  • 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.cipher tools
  • Columnar Transposition Cipher - This tool writes text out in rows based off of a keyword and then reads the text off in columns.cipher tools
  • Double Transposition - The double transposition cipher (AKA double columnar transposition) was used by military forces in World War I and II. It is basically a columnar transposition followed by another columnar transposition. It is considered one of the most secure ciphers that can be performed by hand.cipher tools
  • Enigma (M3) Cipher - This Enigma tool is an accurate simulation of the M3 Enigma cipher machine used by the German Navy during the Second World War.cipher tools
  • Foursquare Cipher - This tool encrypts pairs of letters (like playfair) using four 5 by 5 matrices arranged in a square.cipher tools
  • Fractionated Morse Cipher - Converts plaintext to morse code and then enciphers fixed size blocks of morse back into letters. You can also use a keyword to further increase the security of the cipher.keysquare fraction cipher tools
  • Gronsfeld Cipher - The Gronsfeld cipher is a polyalphabetic cipher (a series of Caesar ciphers) where the shift is determined by numbers. It is similar to the Vigenère cipher, but the key uses digits instead of letters.cipher tools
  • Hill Cipher - The Hill cipher is a polygraphic substitution cipher based on linear algebra. It uses matrices and matrix multiplication to encrypt/decrypt the text.cipher tools
  • Kamasutra Cipher - The Kamasutra (Vatsyayana) cipher is a simple substitution cipher where the 26 letters of the alphabet are organized into 13 pairs of characters.kama-sutra vatsyayana cipher tools
  • Keyed Caesar Cipher - The Keyed Caesar cipher is a variation to the standard Caesar cipher (shifting the letters by 13). In a keyed version, the alphabet is "keyed" by using a word and those letters are moved to the front of the alphabet and the rotation is performed.cipher tools
  • Multiplicative Cipher - In a Multiplicative cipher, 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.multiply additive affine cipher tools
  • One Time Pad Cipher - The one time pad is, theoretically, an unbreakable cipher. In order for it to work, a pre-shared key of the same length as the message must be shared with the intended recipient.one-time pad gilbert vernamn perfect cipher tools
  • Pizzini Cipher - The Pizzini 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.pizzini italian small piece of paper mafia sicillian cipher tools
  • Playfair Cipher - This cipher encrypts pairs of letters (digraphs), instead of single letters as in the simple substitution cipher.cipher tools
  • Porta Key Cipher - This cipher is a polyalphabetic substitution cipher similar to the Vigenère. Where the Vigenère cipher uses 26 alphabets, the Porta only uses 13 alphabets.cipher tools
  • Pollux Cipher - This cipher is a super-encryption system based on Morse code and replaces the dots, dashes and space by alphanumeric characters. When encrypting, a corresponding character is randomly selected from the list of possibilities; therefore every encryption will be almost certainly be different each time.cipher tools
  • Polybius Square Cipher - This cipher is a polyalphabetic substitution cipher and is essentially identical to the simple substitution cipher, except that each plaintext character is enciphered as 2 ciphertext characters.cipher tools
  • QWERTY Cipher - This simple substitution cipher maps the keys of a keyboard layout to letters like this: QWERTY = ABCDEF. You can choose between three different keyboards.keyboard qerty qwerty azerty qwertz dvorak keys cipher tools
  • Rail Fence Cipher - The railfence cipher is a transposition cipher that follows a simple rule for mixing up the characters in the plaintext to form the ciphertext. zig zag zigzag railfence cipher tools
  • Rotation/Caesar Cipher - Also known as a Caesar cipher, this allows you to rotate numbers (Rot 5), letters (Rot 13), letters and numbers (Rot 18), all ASCII characters (Rot 47), or show all rotations from 0 to 25 either encrypted or decrypted. ceasar rot5 rot13 rot18 rot47 cipher tools
  • Rotation Grid - The cipher takes text written in a grid, rotates them by 90° and reads the text back out.k3 crypto degrees 90 cipher tools
  • Rotation Special - This special version of the Rot Cipher takes a set of characters and rotates them each in incremental order where each character is rotated by +1 from the last rotation.cipher tools
  • Route Transposition Cipher - The route transposition cipher rearranges the plaintext letters based on a shape of an imaginary path drawn on a grid, which contains all the message letters.cipher tools
  • Running Key Cipher - This polyalphabetic substitution 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.cipher tools
  • Scytale Cipher - The Scytale is a cipher that is based on a transposition method. A stretch of leather with letters on it was wound upon a piece of wood with the correct diameter and the encoded message could then be read.skytale sky tale scy tale cipher tools
  • Straddle Checkerboard Cipher - Substitution cipher using a variable length alphabet.straddling cipher tools
  • Substitution Cipher - Allows you to create your own version of an alphabet as a substitution.cipher tools
  • Trifid Cipher - The Trifid 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.cipher tools
  • Trithemius Cipher - This cipher uses a tableau (tabula recta) to encrypt/decrypt a message. A custom alphabet can also be created to make it a little more secure. cipher tools
  • Übchi Transposition Cipher - The Übchi Transposition Cipher was used by the Germans during World War 1 and is a double columnar transposition cipher.cipher tools ubchi ubichi
  • Vigenère Cipher - The Vigenère Cipher is a polyalphabetic substitution cipher.cipher tools
  • Vic Cipher - The Vic Cipher is a complex cipher that involves a straddling checkerboard, mod 10 chain addition and a disrupted doulbe transposition. It was originally a pen and paper cipher used by a soviet spy codenamed "Victor".cipher tools straddlecheckerboard straddle russian
Number Tools

  • ASCII, Decimal, Binary, Hex, Octal - Converts characters between ASCII, Decimal, Binary, Hex and Octal.hexadecimal encoding transcoding number tools
  • How To Read A Barcode (Tool included) - Describes how a barcode is comprised and includes a tool to convert numbers 0-9 to a barcode code numbers.number tools
  • Base Conversion - Converts numbers from one base to another. Works from 2 to 62. See also Base 64.number tools
  • Base64 - Converts text Base64. See also Base Conversion 2 to 62.number tools
  • Clock Angle Calculator - This tool will calculate the angles between hour to minute hands and minute to hour hands in a clockwise manner. It will accept hours in either 12 or 24 hour format.number tools
  • Digital Root - Calculates the digital root value of your text.number tools
  • Euler-Mascheroni Constant (γ) Searcher - Four tools to search through 10 million digits of γ.gamma number tools
  • Euler Number (e) Searcher - Four tools to search through 10 million digits of e.number tools
  • Fibonacci Sequence - Allows you to see the fibonacci sequence up to a certain requested number. Desktop Chrome/Firefox users can calculate with high precision any number their browser can handle (over 1 million iterations easily).number tools
  • Fraction Approximator - Tool to approximate fractions to a high degree.number tools
  • GC Number GC ID - Tool that allows you to translate the GC Number the GC ID using a custom base 31 conversion.geocache custom base31 number tools
  • Golden Ratio (φ) Searcher - Four tools to search through 10 million digits of φ.number tools
  • Lucas Numbers - Allows you to see the Lucas Numbers (closely related to the fibonacci sequence) up to a certain requested number. Desktop Chrome/Firefox users can calculate with high precision any number their browser can handle (over 1 million iterations easily).number tools
  • Numbers To Words - Converts numbers entered into their word form. Handles up to a nonillion.number tools
  • Pi (π) Searcher - Four tools to search through 10 million digits of π.number tools
  • Prime Numbers - Allows you to see if a number is a prime number, show all prime factors, and to return all prime numbers up to a requested number.number tools
  • Pythagoras's Constant (√2) Searcher - Four tools to search through 10 million digits of √2.number tools
  • Roman Numerals - Allows you to convert numbers to and from Roman numerals.number tools
  • Scrabble Scorer - Tool to convert letters to numbers and sum them for you using scrabble values.number tools
  • Shadoks Number System - Tool to convert decimal to the base 4 Shadoks numbers.numeral base4 base 4 number tools
  • Temperature Converter - Convert temperature between Celcius, Fahrenheit and Kelvin.farenheit fahrenheight farenheight conversion number tools
  • Theodorus' Constant (√3) Searcher - Four tools to search through 10 million digits of √3.number tools
  • Triangle Calculator - Tool to calculate missing sides or angles of a triangle.number tools
  • UTF-8 Tool - UTF-8 (8-bit Unicode Transformation Format) is a variable length character encoding that can encode any of the valid Unicode characters.utf8 hexadecimal ascii bytes number tools
  • Unit Converter - Tool to convert units for volume, weight, length, time and temperature.farenheit fahrenheight farenheight celcius kelvin fahrenheit conversion second minute hour day week month year millimeter centimeter meter kilometer inch foot yard mile gram kilogram ounce pound kitchen tsp tbsp cup pint quart gallon fluid ounce ml milliliters liters number tools
  • Vanity Values - Tool to convert letters to numbers and sum them for you using vanity letter values from a phone pad.number tools
  • Word Value - Tool to convert letters to numbers and sum them for you.number tools
Miscellaneous Tools

  • Reverse Wherigo (Waldmeister) - This tool allows you to decode the three 6-digit codes in a Reverse Wherigo. You can also create your own from a set of coordinates.miscellaneous tools
  • Reverse Wherigo (day1976) - This tool allows you to decode the two 5-digit character/number codes in the open-source day1976 Reverse Wherigo. You can also create your own from a set of coordinates.miscellaneous tools
  • Text Manipulator - Tool to manipulate text in a large variety of ways. Uppercase, lowercase, reverse text, upside down text, rotation, etc.buble alphabet alphabetize random randomize rot rot13 rot5 rot18 rot47 rotation caesar miscellaneous tools
  • Frequency Analysis - Tool that analyzes a group of text for letter, number and misc character frequencies.miscellaneous tools
  • Unicode Characters - Tool that maps every character and displays a friendly name associated with it.miscellaneous tools hex hexcode u+
  • Exif Reader - Exif reader that supports reading exif data from JPEG, PNG, WebP, TIFF, HEIC/HEIF, AVIF, and limited support for GIF.photo image picture miscellaneous tools
  • Spelling with Elements - Spell out a word using the elements on the periodic table!words elemental miscellaneous tools
  • Resistor Color Code - Tool to calculate the resistance and tolerance of the color bands on electronic resistors, capacitors, inductors and other electrical components.miscellaneous tools
  • DNA Translator - This tool encodes or decodes a message using letters in the DNA code (A, C, G, and T).dna-o-gram dnaogram dna sequence acgt agct translate miscellaneous tools
  • ISBN Tool - Tool to convert ISBN-10 ISBN-13. You can also lookup the ISBN via Open Library, Amazon and Google.isbn10 isbn13 miscellaneous tools
  • Draw A Stickman Solver/Creator - This tool allows you to solve "Episode 1" of the Draw A Stickman puzzles. You can also create your own from a custom message as well.drawastickman miscellaneous tools
  • Sudoku Solver - HTML based sudoku solver that is mobile compatible. Easy to use with instructions.miscellaneous tools
  • Elemental (Periodic Table) - Converts characters between periodic table of elements. Displays numbers, symbols and names.elements miscellaneous tools
  • Hash Functions - This tool allows you to generate a variety of hash functions using the Forge crypto library.md5 sha1 sha-1 sha256 sha-256 sha512 sha-512 encryption miscellaneous tools
  • Pig Latin Encoder - This tool allows you to encode a message of your choice in Pig Latin.miscellaneous tools
  • Flip A Coin - Simple way to flip a coin. Keeps track of your choices and win/loss counts.miscellaneous tools
  • Roll The Dice - Simple way to roll the dice. Choose up to 10 dice at a time or do a random roll.miscellaneous tools
  • Bookmarklets - Several javascript bookmarklets to shortcut common geocaching functions such as coordinate conversion, gc/tb lookup, keyword search, user search, etc.miscellaneous tools
  • Cache Page Creation Helper - Example page to show you how to spruce up your cache creation pages.miscellaneous tools
  • QR Code Scanner - Allows you to scan a QR code image.miscellaneous tools
  • QR Code Generator - Allows you to create a QR code with custom colors and density.miscellaneous tools
  • Barcode Generator - Tool to create a barcode in Format 39, Format 128, and EAN13.miscellaneous tools
  • Circular Gallifreyan Creator - Tool that allows you to create circular Gallifreyan. Works on both mobile and desktop.miscellaneous tools
Helpful Geocaching Links

Codes Tables