Base64 Encoder / Decoder
Encode text to Base64 or decode it back instantly.
100% client-side — your data never leaves your browser.
Your result will appear here.About the Base64 Encoder / Decoder
Encode any text or string to Base64, or decode a Base64 string back to plain text, right in your browser. Our converter is Unicode-safe — emoji, accents, and multilingual text round-trip perfectly — and nothing you paste ever leaves your device.
How to use the Base64 Encoder / Decoder
- 1Pick a mode: Encode (text → Base64) or Decode (Base64 → text).
- 2Paste your input into the editor on the left.
- 3Read the converted result live in the output panel on the right.
- 4Click "Copy" to send the result to your clipboard.
Why use our Base64 Encoder / Decoder
Two-way conversion
Switch between encoding and decoding with a single click.
Unicode-safe
Properly handles UTF-8 — emoji and non-ASCII characters survive round trips.
Clear errors
Invalid Base64 input shows a friendly error instead of failing silently.
100% private
All conversion runs locally in your browser — your data is never uploaded.
Frequently asked questions
What is Base64 used for?+
Base64 encodes binary or text data into a safe ASCII representation, commonly used in email attachments, data URLs, JWTs, and API payloads where binary characters aren't allowed.
Does Base64 encrypt my data?+
No. Base64 is encoding, not encryption — anyone can decode it. Don't use it to hide sensitive information; use real encryption for that.
Why does my decoded text look broken?+
The input may not be valid Base64, or it may have been encoded with a different character set. Make sure you're decoding a complete, untruncated Base64 string.
Is my input sent to a server?+
No. Encoding and decoding happen entirely in your browser. Nothing is uploaded, stored, or logged.