Cipher, Calculator & Converter Tools

Encrypt & decrypt with classical ciphers, solve with calculators, and convert between units — 129 free tools all in one place.

Ciphers

Beginner Ciphers

Caesar Cipher Atbash Cipher Pigpen Cipher Polybius Square Morse Code

Historical Ciphers

Vigenère Cipher Playfair Cipher Beaufort Cipher Trithemius Cipher Alberti Disk Cipher Porta Cipher

Military-Grade Ciphers

Four-Square Cipher Running Key Cipher Vernam Cipher Autokey Cipher Straddling Checkerboard

Visual & Symbol Ciphers

Baconian Cipher Homophonic Cipher Gronsfeld Cipher

Mathematical Ciphers

Affine Cipher Hill Cipher Quagmire Cipher

Cipher Identifier

Paste ciphertext to auto-detect the cipher type — supports 20+ ciphers

Calculators

Finance & Investment

Marketing & Ads

ROAS Calculator Break Even ROAS ACOS Calculator

Math & Science

Percentage Calculator Random Number Generator GPA Calculator Scientific Calculator 2D Distance Calculator 3D Distance Calculator Lat Long Distance Scale Factor Calculator Five Number Summary Grade Curve Calculator mEq to mg Calculator

Health & Life

Baby Eye Color Conception Calculator Pregnancy Conception Dog Age Calculator Half Birthday Calculator Mulank Calculator Age Calculator BMI Calculator BMR Calculator TDEE Calculator Calorie Calculator One Rep Max Calculator Body Fat Calculator Macro Calculator Running Pace Calculator Calorie Burn Calculator Water Intake Calculator

Date & Time

Date Calculator Countdown Calculator

Engineering

Pipe Volume Calculator Pea Gravel Calculator Aspect Ratio Calculator Feet and Inches Plant Spacing Calculator

Media & Other

Playback Speed Audiobook Speed YouTube Playlist Length Turkey Cooking Time

Converters

Text Tools

Case Converter Word Counter

Developer Tools

PX to REM Converter REM to PX Converter Newlines to \n Converter

Color

RGBA to HEX Converter

Number Systems

Hex to Binary Converter Binary to Octal Converter Binary Translator

Time

EST to CST Converter