Free Base64 Encoder & Decoder — Text to Base64 Instantly

Base64 encoding is everywhere in development — data URIs, JWT tokens, API payloads, email attachments. And when you need to quickly encode a string or decode a token, you don’t want to write a script.

The Tools.Town Base64 Encoder & Decoder handles both directions:

Encode: Paste any text (including Unicode, emoji, and multi-byte characters) and get the Base64 or Base64URL output.

Decode: Paste a Base64 string and get the original text back. The tool handles padding, whitespace, and both + and - variants automatically.

Everything runs in your browser — the text never leaves your device.

Frequently Asked Questions

What is Base64? Base64 is a binary-to-text encoding that represents binary data using 64 printable ASCII characters. Commonly used to embed binary data in JSON, HTML, and email.

What is the difference between Base64 and Base64URL? Base64URL replaces + with - and / with _ to make the encoded string safe for use in URLs and filenames without percent-encoding.

Does it handle Unicode (emoji, accented characters)? Yes — the tool uses TextEncoder to convert Unicode strings to UTF-8 bytes before encoding, and TextDecoder to reverse it.

Try it now — Open Base64 Encoder — no signup required.