Converters tools
7 free tools, all running in your browser. Units, measurements and number systems, converted precisely.
- Binary TranslatorType in either box — text converts to binary and binary converts back to text, live as you type.
- Caesar Cipher Encoder / DecoderType or paste text, pick a shift from 1 to 25, and see the encoded and decoded results update live.
- Morse Code TranslatorType in either box — text and Morse code stay in sync, and you can play the result as sound.
- Number to Words ConverterType any number and see it spelled out in English words instantly, with an optional currency mode for checks.
- Roman Numeral ConverterType a number or a Roman numeral and the other field converts as you type.
- Text Encryption (AES)Encrypt any text with a password using AES-256-GCM, or decrypt a bundle someone sent you — entirely on your device.
- Unit ConverterPick a category, choose your units and type a value — the other side updates as you type.
About these converters tools
Unit conversion looks trivial until precision or an unfamiliar unit is involved — cooking measures that differ between countries, imperial and metric mixtures on the same drawing, or number systems that need converting rather than approximating.
These pages convert exactly and show enough of the working that you can check them. Everything is calculated in your browser as you type, with no rounding applied until the display step.