Base64 encode
Turn text or a file into Base64, or back.
Encode or decode Base64 for text and files in the browser, including UTF-8. The bytes are not uploaded.
This stays in your browser. Nothing you type or drop here is sent to a server.
How to use this calculator
- Choose encode or decode.
- Paste text or pick a file.
- Copy the result. A binary decode can be downloaded.
Questions
Base64 encode: is the input uploaded?
No. The page reads and writes only in this browser. There is no account and no server round trip.
What should I check before trusting the result?
Encode or decode Base64 for text and files in the browser, including UTF-8. The bytes are not uploaded.