Encoding

Encode text to Base64 or decode Base64 to text. UTF-8 / unicode safe. Free, browser-based, no upload.

Percent-encode or decode URLs and query strings. Component or full-URL mode. Browser-based, instant.

Encode HTML-unsafe characters (<, >, &) to entities, or decode entities back to characters. Named and numeric modes.

Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text. Runs entirely in your browser via Web Crypto API.

Convert text to 8-bit binary or decode binary back to text. UTF-8 safe, browser-based, instant.

Shift letters by a fixed amount — ROT13 (the classic) or any Caesar shift from -25 to 25. Free, browser-based.

Encode text to International Morse Code or decode Morse back to text. Supports letters, digits, punctuation.

Convert text to hexadecimal bytes or decode hex back to text. UTF-8 safe, ignores formatting and 0x prefixes.

Convert text to ASCII or Unicode code points in decimal or hex — and decode code-point lists back to text. Browser-based, full Unicode support.

Encode and decode Base32 (RFC 4648), Base32-hex, and Base58 (Bitcoin / IPFS) entirely in your browser.

Convert between Punycode (ASCII) and Unicode domain names. Encode and decode internationalized domain names (IDN) instantly.

Free online bcrypt password hash generator. Hash passwords with configurable cost factor (4-12). Pure browser-based, nothing is sent to any server.

Free online ASCII converter. Convert text to decimal, hex, octal, and binary ASCII codes and back. Includes full ASCII character reference table.

Free online number base converter. Convert between binary, decimal, octal, and hexadecimal instantly.

Free online octal number converter. Convert octal numbers to decimal, hexadecimal, and binary instantly.

Free online HTML entity converter. Encode text to named, decimal, or hex HTML entities and decode entities back to text.

Free online IDN to Punycode converter. Convert internationalized domain names to/from Punycode (xn-- format).