Free online Base58 encoder/decoder — encode or decode text using Bitcoin-style Base58 encoding instantly in your browser. No data is stored. Uses the standard Bitcoin alphabet, handles leading zero bytes, and supports cryptocurrency address formats.
Encode text to Base58 or decode Base58 to text
Free online Base58 encoder/decoder — encode or decode text using Bitcoin-style Base58 encoding instantly in your browser. No data is stored. Uses the standard Bitcoin alphabet, handles leading zero bytes, and supports cryptocurrency address formats.
Runs entirely in your browser. No data is sent to our servers.
Encode text using Bitcoin-style Base58
Base64 Encode
Free online Base64 encoder — convert text to Base64 format instantly in your browser. No data is stored. Supports UTF-8 text, optional URL-safe encoding, and handles multi-byte characters.
Base64 Decode
Free online Base64 decoder — convert Base64 encoded strings back to plain text instantly in your browser. No data is stored. Supports standard and URL-safe Base64, handles padding, and decodes UTF-8 multi-byte characters.
Base64URL Encode
Free online Base64URL encoder — encode text to URL-safe Base64 format instantly in your browser. No data is stored. Produces RFC 4648 output with -_ instead of +/ and no padding, ideal for JWTs and URL parameters.
Base64URL Decode
Free online Base64URL decoder — decode URL-safe Base64 encoded strings back to text instantly in your browser. No data is stored. Handles RFC 4648 format with -_ characters and missing padding.