Base64 Encode

Convert text to Base64 in your browser, safe for any language and emoji.

Runs in your browser — nothing is sent or saved.

How to encode text to Base64

  1. Type or paste your text in the left box.
  2. The Base64 version appears on the right as you type.
  3. Press Copy result to take it with you.

What Base64 is for

Base64 turns any text or data into a string that uses only safe characters: the letters A to Z in both cases, the numbers 0 to 9, and the two signs + and /. It exists because some systems only accept plain text and choke on other bytes. Email attachments, small images built into a web page, and some API tokens all travel as Base64.

It gets a bit bigger

Base64 packs every three bytes of input into four output characters. That means the result is about one third larger than the text you put in. So Base64 is a way to make data safe to carry, not a way to make it smaller. It is also not secret: anyone can decode it, so never use it to hide a password.

Any language works

This tool reads your text as UTF-8 before encoding. So accented letters, non-Latin scripts, and emoji all encode correctly and come back the same when decoded. Plain browser tools often break on those characters; this one does not.

FAQ

Is Base64 a form of encryption?

No. It only reshapes data into safe characters. Anyone can decode it in one step, so it gives no privacy. Use real encryption to keep something secret.

Why is the output longer than my text?

Base64 turns three bytes into four characters, so the result is roughly a third bigger. That trade buys safe transport across systems that only handle plain text.

Does it handle emoji and other languages?

Yes. The text is read as UTF-8, so emoji, Arabic, Chinese, and accented letters all encode and decode without damage.

What are the = signs at the end?

They are padding that makes the length a multiple of four. The decoder needs them, so keep them when you copy the result.

Is my text uploaded?

No. Encoding happens in your browser and nothing is sent or saved.

What is a base64 encoder for?

Some systems only accept plain letters and numbers. When you encode to base64, any text, emoji included, becomes a safe string you can drop into a URL, a config file, or an API request.