Base64 Encoder & Decoder
Encode text to Base64 or decode it back — instantly.
Free online Base64 encoder & decoder
Base64 encoding turns text into a compact, safe format used all over web development — in URLs, JSON, emails and data URIs. This free tool encodes your text to Base64 or decodes Base64 back to readable text in one click, with full Unicode support for emojis and every language. It runs entirely in your browser, so your data never leaves your device.
Frequently Asked Questions
What is Base64?
Base64 is a way of encoding text or data into a safe set of characters (A-Z, a-z, 0-9, + and /). It's commonly used to embed data in URLs, emails, JSON and web development where binary or special characters could cause problems.
Is this Base64 tool free?
Yes, it is completely free with no sign-up and no limits. Paste your text, click Encode or Decode, and copy the result.
Does my text get uploaded anywhere?
No. Encoding and decoding happen entirely in your browser, so your text is never sent to a server or stored. It stays completely private.
Does it support emojis and other languages?
Yes. This tool handles full Unicode, so emojis and non-English characters encode and decode correctly.
Does it work on mobile?
Yes, the Base64 encoder and decoder is fully mobile-friendly and works on any device.