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There are several types of mystery geocaches, many of which you need to solve at home before you venture out to find the geocache. This is a useful list of websites to help you solve those puzzles.
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Geocaching Puzzle Help - A FB group for cachers around the world to ask for puzzle help. |
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Solving Geocaching Puzzles - A FB group for cachers around the world to ask for puzzle help. |
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Geocaching Puzzle of the Day - a collection of puzzles to solve daily. |
| General |
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| GC Puzzle Book - a downloadable pdf with lots of puzzle solvers and alphabets. |
| How to Puzzle Cache - a brilliant book full of lessons, tips, tricks and hints for solving geocache puzzles. |
| Parmstro's Geocaching Puzzle Pages - several tools and hints to solve geocaching puzzles along with useful links. |
| Geocaching Toolbox - all geocaching tools a geocacher needs in one box! |
| Cipher Types |
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| Practical Cryptography - information on how to identify unknown ciphers. |
| CrypTool Online - a variety of ciphers, coding methods, and analysis tools are introduced together with illustrated examples. |
| Cipher Tools - several tools to solve ciphers. |
| Cipher Types - a comprehensive list of several different ciphers. |
| Secret Code Breaker - several downloadable tools. |
| DCode - tools, ciphers, mathematics, communication systems, data processing and more! |
| Purple Hell - several tools to solve ciphers. The website is now archived but a backup remains. |
| The Black Chamber - several tools to solve ciphers. |
| Braingle - codes, ciphers, encryption and cryptography. |
| Solve Ciphers |
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| Crytocrack - a cipher solving program for Windows. |
| Quipqiup - cryptogram solver. |
| Find Cipher Type - an archived site to help you to identify the cipher type. |
| Ackgame - identify the cipher including letter counts, index of coincidence etc. |
| Altamatic - cryptography: substitution and transposition ciphers, morse, numeric codes, digital hashes, and more! |
| ROT Encoder/Decoder - ROT13 is a simple encryption cipher that Geocaching.com uses in its hints but this will decipher all ROT transformations. |
| Transposition Cipher Solver - help decrypt transposition ciphers. |
| Iread.it - create and solve cryptarithms and alphametics. |
| My Geocaching Profile - several tools, Caesar & Vigenère cipher codebreakers and TinEye reverse image lookup. |
| Vigenère Cipher - a program that allows you to encrypt and decrypt messages and files. It can also break the cipher - decode a ciphertext without the key. |
| Enigma Decoder - decode Nazi secrets. |
| Enigma Simulation - a more advanced enigma decoder. |
| Spam Mimic - encodes or decodes a message within a spam message. |
| Words |
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| Omniglot - the online encyclopedia of writing systems & languages. |
| Google Translate - translate any language. |
| Anagram Solver - solves any anagram! |
| Crossword Puzzles - an online crossword puzzle solver. |
| Alphametic Applet - an alphametic is an arithmetic puzzle in which letters stand for digits. |
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| Numbers |
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| Binary Translator - encodes and decodes ASCII and ANSI text as well as binary, hexadecimal etc. |
| ASCII to Hex - encodes or decodes several number bases to text (binary, hex, decimal, octal, ROT13 & ASCII). |
| Unit Converter - lots of different number unit converters (binary, hex, distances, weights, volume, areas, force, clothing etc). |
| Number Converter - lots of different number converters (distances, weights, volume, areas etc). |
| Planet Calc - several tools, cryptography, convertors, maths, geometry plus much more. |
| Id-i-om - search irrational numbers including pi, e, square root of 2 and phi. |
| Number World - online calculators, prime numbers, fibonacci numbers, equation solver etc. |
| Integer Sequences - an on-line encyclopedia of integer sequences (OEIS®). |
| Date Converter - Convert a date from any calendar (Gregorian, Julian, Mayan etc). |
| Numbers - numbers in over 5000 languages. |
| Sudoku Solver - enter the numbers of the puzzle you want to solve in the grid. |
| KenKen Puzzle Solver - a suduko like puzzle. |
| Kakuro Puzzle Solver - a logic puzzle refferred to as a mathematical crossword. |
| Images |
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| Magic Eye Solver - upload magic eye/stereograms to decipher. |
| TinEye - a reverse image search. |
| ImgOps - a reverse image search with metadata information and links to other image operations. |
| Jeffrey's Image Metadata Viewer - examine the metadata of any image. |
| Exif Tool - read, write and edit metadata information. |
| GIF Explode Tool - extract a single frame image from an animated GIFs. |
| Trojan - hides data inside pictures with or without a key. |
| Hide Files in a Picture - hides a file in an image. |
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| Coordinates |
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| Geographic Coordinate Conversion - a wikipedia page that explains the different types of geographic coordinate systems. |
| Nearby - a brilliant coordinate converter between different formats. |
| Grid Reference Finder - search by post code, what3words, coordinates and OS grid reference and show on several different maps. |
| GPS Coordinate Converter - convert GPS coordinates and view them on maps. |
| GPS Visualizer - calculate answers to some common geographic questions, and draw maps from simple coordinates. |
| Geographic Midpoint Calculator - finds the exact point that lies halfway between two or more places. |
| Integral Calculator - solve maths equations. |
| FizzyCalc (Windows) - simple conversion of coordinates to various formats. |
| Alphabets/Symbols |
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| Morse Code Translator - decrypt/encrypt morse code to text from an audio file or text. |
| Tap Code Translator - decrypt/encrypt tap code to text, used by prisoners in jail. |
| Online Barcode Decoder - decode several variaties of barcodes like linear, QRcode, datamatrix, pdf417 and azteccode from an image, text or xml. |
| Hyper Physics - lots of physics with calculators: mechanics, electricity, magnetism, heat, quantum, sound, hearing, light, relativity, etc. |
| HTML |
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| W3schools - web page building tutorials, and lists of coding for characters and colours used in HTML. |
| Nattyware: Pixie - an application to find the hex, RGB, HTML, CMYK and HSV values of that colour. |
| RGB to HSB Calculator - transform RGB colour values to HSB values. |
If you haven't done so already, you might want to check out our tips on Solving Geocaching Puzzles 
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