Base64 Encode & Decode — Free Online Tool
Encode text to Base64 or decode Base64 back into plain text with this free online Base64 tool. Everything runs in your browser, so your data is never uploaded.
How to use Base64 Encode / Decode
- Paste your text or Base64 string.
- Click “Encode” or “Decode”.
- Copy the result.
Why use this free Base64 Encode / Decode tool?
- 100% free — no sign-up, no watermark and no hidden limits.
- Completely private — your files are processed in your browser and never uploaded, so even confidential documents stay on your device.
- Instant & offline-capable — there’s no waiting for uploads or servers; it works even with a weak connection.
- Works on any device — runs in any modern browser on desktop, tablet or mobile.
Frequently Asked Questions
What is Base64 used for?
Base64 encodes binary or text data into an ASCII string, commonly used to embed data in URLs, emails, data URIs and config files.
Does it handle Unicode text?
Yes, the tool correctly encodes and decodes UTF-8 text including emoji and non-Latin scripts.
Is my data private?
Yes — encoding and decoding happen in your browser and nothing is uploaded.