Cipher Decipher

Tool directory

Every utility follows the same layout: large inputs, monospace outputs, and instant updates. Filter by category or start from the homepage search.

Filter:All Classical Ciphers Encoding & Decoding Communication Codes Puzzle Tools Security & Hashing Steganography

Showing Puzzle Tools (20 tools)

Find all possible anagrams and word combinations from given letters.

Word Pattern Solver

Help with cryptograms using word patterns and letter substitutions.

Letter Frequency Analyzer

Count and analyze letter frequencies in text for cryptogram solving.

Substitution Cipher Helper

Tools and utilities for solving substitution cipher puzzles.

Cryptogram Solver

Automated solving of substitution ciphers using frequency analysis and pattern recognition.

Pattern Recognition

Identify repeating patterns in encrypted text to help break substitution ciphers.

Index of Coincidence Calculator

Statistical tool for cipher analysis to determine if text is encrypted and likely cipher type.

Kasiski Examination

Find repeated sequences to determine cipher key length for polyalphabetic ciphers.

Statistical test to determine if text is encrypted and likely cipher type with key length analysis.

Character Counter

Detailed text statistics including characters, words, sentences, paragraphs, and reading time estimates.

Reading Level Calculator

Flesch-Kincaid and other readability metrics to analyze text complexity and reading difficulty.

Compare two texts and show differences with detailed analysis of additions, deletions, and modifications.

Palindrome Checker

Find palindromes in text with position analysis and longest palindrome identification.

Reverse text, words, or characters with multiple reversal modes for text manipulation.

Roman Numeral Converter

Convert between Roman numerals and Arabic numbers with validation and historical context.

Decimal to Other Bases

Convert decimal numbers to octal, base-32, base-36, and other number systems.

Scientific Notation Converter

Convert between standard and scientific notation with mantissa and exponent analysis.

Barcode Generator

Create various barcode formats (Code128, EAN, UPC) with validation and format information.

Time/Unix Timestamp Converter

Convert between human-readable dates and Unix timestamps with timezone support.

Color Code Converter

Convert between HEX, RGB, HSL, and CSS color formats with comprehensive color analysis.