Encoders & Ciphers

10 tools

Free online encoders, decoders and ciphers — Base64, hex, HTML entities, ROT13, Morse, Caesar cipher, Base32 and more, all instant and 100% client-side.

HTML Entity Encode / Decode Escape text to HTML entities, or decode entities back to characters.

Text to Hex Converter Convert text to hex bytes and decode hex back to readable text.

ROT13 Encoder / Decoder Apply the ROT13 letter-substitution cipher — the same action encodes and decodes.

Morse Code Translator Convert text to Morse code and decode Morse back to text.

Caesar Cipher Shift letters by any amount to encode or decode a Caesar cipher.

Base32 Encode / Decode Convert text to and from Base32 (RFC 4648).

Text to ASCII Converter Convert text to decimal ASCII/character codes and back.

HMAC Generator Compute an HMAC from a message and secret key using SHA-1/256/384/512.

Base58 Encode / Decode Convert text to and from Base58 (the Bitcoin alphabet).

Unicode Escape / Unescape Convert characters to \uXXXX escape sequences and back.

About our Encoders & Ciphers

Encode and decode text in every common format: Base64 and Base32, URL and HTML-entity encoding, hex and ASCII codes, plus classic ciphers like ROT13, Caesar and Morse code. Handy for developers, students and puzzle fans alike.

Encoding is not encryption — it simply makes data text-safe or obscures it. Everything runs locally in your browser, so even sensitive input never leaves your device.