About the Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to plain text instantly. Switch between Encode and Decode, paste your input, and copy the result. Full UTF-8 support means emoji and accented characters round-trip correctly.
Base64 is widely used to embed data in URLs, JSON, data URIs and email. Because everything is processed in your browser, you can safely encode or decode tokens, snippets and other sensitive strings without sending them to a server.
Features
- Encode text to Base64 and decode it back
- Full UTF-8 support for emoji and accents
- Instant conversion as you type
- Clear inline error for invalid Base64
- Copy the result to your clipboard
- 100% client-side — your data stays private
How to use the Base64 encoder / decoder
- Choose Encode or Decode at the top.
- Type or paste your input into the box.
- The converted output appears instantly below.
- Click Copy to grab the result.
Frequently asked questions
What is Base64?
Base64 is an encoding that represents binary or text data using 64 ASCII characters, making it safe to embed in URLs, JSON, data URIs and email.
Does it support non-English characters?
Yes. The tool uses UTF-8, so emoji and accented or non-Latin characters encode and decode correctly.
Is Base64 encryption?
No. Base64 is encoding, not encryption — anyone can decode it. Don't use it to protect secrets.
Is my data uploaded anywhere?
No. All encoding and decoding happens locally in your browser, so your data never leaves your device.