Base64 Encoder / Decoder

Convert text to Base64 and back. Handles emoji and non-English characters correctly — everything happens in your browser.

Text to encode — or Base64 to decode

Result

How it works

Base64 represents binary data as plain ASCII text, which is why it's used in data URLs, email attachments, and API payloads. Encode turns your text (including Unicode like emoji) into Base64; Decode reverses it. Invalid input is flagged instead of silently producing garbage.