Antipodes Tool
Find the opposite side of Earth using coordinates or an interactive map
Find a puzzle tool
Search all your puzzle tools, or browse by category to find what you need.
Browse by category
Select a category or save favorites with ☆Coordinates & GPS
Waypoint calculations, maps, geographic formats and location puzzles
Bearing & Distance Calculator
Project waypoints, find reverse bearings and calculate multi-stage routes
Coordinate Conversion
Convert to and from different coordinate formats
Coordinate Projection
Project a waypoint using bearing and distance
Coordinate Triangle & Triangulation
Measure 3+ waypoints or locate a target from bearings and distances
Geohash Encoder / Decoder
Encode GPS coordinates or decode geohashes and nearby cells
what3words Converter
Convert what3words addresses to GPS coordinates and coordinates to what3words
Puzzle & game solvers
Logic grids, word puzzles and interactive cube solvers
Xtreme Tic Tac Toe Solver
Fill X/O grids without three in a row; import screenshots
Killer Sudoku Solver
Draw numbered cages and automatically solve 9×9 Killer Sudoku puzzles
KenKen Solver
Enter arithmetic cages and solve KenKen number grids from 3×3 to 9×9
Calcudoku Solver
Solve arithmetic cage puzzles with customizable sizes and rules
2×2 Rubik's Cube Solver
Enter your 2×2 colours and follow a step-by-step solution
Magic Square Solver
Build, generate and analyze magic square grids
Nonogram Solver
Solve picture logic grids using row and column clues
Kakuro Solver
Generate and solve Kakuro cross-sum puzzles, or build your own grid
Light Up (Akari) Solver & Game
Play, generate and solve light-bulb logic puzzles from 3×3 to 25×25
Numberlink Solver & Game
Connect matching pairs, generate random grids and solve path puzzles
Rubik's Cube Solver
Select your cube colours and follow a step-by-step 3×3 solution
Sudoku Solver
Solve Sudoku puzzles
Word Search Maker & Solver
Create custom word searches or solve existing word search puzzles
Hidato Solver
Solve square or hexagonal Hidato puzzles, including irregular shapes
Minesweeper Logic Solver & Game
Find safe cells and mines with logic, or play random games with hints
Codebreaker Game, Generator & Solver
Play visual Mastermind, create unique number locks or solve exact and misplaced clues
Ciphers & cryptography
Classic substitutions, transpositions and custom puzzle codes
Affine Cipher
Encode, decode and brute-force every valid affine key
Atbash Conversion
Convert to and from Atbash
Bacon's Cipher
Encode and decode A/B Bacon cipher groups
Beaufort Cipher
Encrypt and decrypt text with the Beaufort cipher
Bifid Cipher
Encode and decode Polybius-based Bifid cipher messages
Caesar / ROT Cipher
Decode ROT13, shift letters, and try all 26 Caesar cipher shifts
Columnar Transposition
Encode or decode keyword-ordered columnar transposition
Compass Bloom Code
Create and solve an original compass-symbol puzzle cipher
Four-Square Cipher
Encrypt and decrypt using four 5×5 cipher squares
Gronsfeld Cipher
Encrypt and decrypt using a repeating numeric key
Kamasutra Conversion
Custom substitution cipher
Pigpen Cipher
Visual Pigpen alphabet helper and decoder
Playfair Cipher
Interactive Playfair cipher and 5×5 key square
Polybius Square
Interactive 5×5 Polybius encoder and decoder
Rail Fence Cipher
Encrypt and decrypt using a zig-zag rail pattern
Trifid Cipher
3D cube-based fractionation cipher with transposition
Vigenère Cipher
Encrypt and decrypt messages with Vigenère
Codes, alphabets & formats
Morse, number bases, symbols and text representations
ASCII Converter
Convert text, decimal, hex and binary ASCII
Base64
Encode and decode Base64 text
Braille
Convert text to Braille or Braille to text
Brainfuck & Ook!
Translate between Brainfuck and Ook! or run Brainfuck code
Kenny Code Conversion
Convert to and from Kenny Code
Morse Code Cipher
Quickly convert Morse code and playback sounds
Number Base Converter
Convert binary, octal, decimal, hexadecimal and base 36
Periodic Table Decoder
Convert atomic numbers, element symbols and element names
QR Binary
Create and convert text, QR codes and QR binary
Resistor Color Code
Decode 4-band, 5-band and 6-band resistor color codes
Semaphore Alphabet
Visual A–Z semaphore flag-position reference
Signal Flags
Maritime signal flags
Tap Code
Encode and decode traditional tap-code coordinates
Vanity Conversion
Vanity phone tool
Visual Binary Encoder, Decoder & Game
Create black-and-white binary grid puzzles, decode messages or play challenges
Images, media & file tools
Reveal hidden image details, inspect files and extract frames
Animated GIF Frame Extractor
Extract GIF frames, reveal hidden clues and download PNGs
EXIF Viewer
Inspect image metadata and GPS information
Image Steganography
Hide and extract secret messages inside PNG images
Magic Eye / Stereogram Helper
Upload stereograms, add repeat guides and build a viewing aid
Photo Manipulation Tool
Adjust images to reveal hidden messages, faint clues and hidden pixels
Text & puzzle helpers
Identify, organize and manipulate mystery-puzzle clues
No matching tools
Try a different search term or browse all categories.