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Base64 Encode Text

Type or paste any text and get the Base64 representation instantly. Everything runs in your browser — nothing is sent anywhere.

Plain text

Base64

BASE64

Base64 Encode

Converts UTF-8 text to Base64 encoding. Handles Unicode characters correctly.

Runs entirely in your browser

How it works

Text encoding uses the browser's built-in btoa and atob functions with proper UTF-8 handling. File reading uses the FileReader API — entirely within your browser, with no upload.

Your data stays local

All encoding and decoding happens inside your browser tab. The text or file you provide is never sent to a server — it stays entirely on your device.

Frequently asked questions

What is Base64 encoding?

Base64 converts binary or text data into a string of ASCII characters, making it safe to embed in HTML, JSON, URLs, or email.

Does this handle Unicode and emoji?

Yes — the tool uses UTF-8 encoding before Base64, so all Unicode characters are handled correctly.

Is my text sent to a server?

No. Encoding is done with btoa() in your browser.