Encoding & conversion
Base64 encode / decode
Text to bytes and back again. Chinese and emoji make the round trip intact.
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Using this tool
Convert UTF-8 text to or from Base64, for inspecting text payloads rather than encrypting data.
Actions: Encode · Decode
Example
Encode hello; decoding aGVsbG8= restores it.
Example action and settings
Action: Encode URL-safe alphabet (- and _, no = in encoded output): Off
Input / action
hello
Result / expected behavior
aGVsbG8=
Available options: URL-safe alphabet (- and _, no = in encoded output)
Scope and limitations
- Base64 is not encryption. Decoded text must be valid UTF-8; use the file converter for binary data.
Common mistakes
- Standard and URL-safe alphabets differ. A non-UTF-8 error is not valid decoded text.
Related tools
Base64 file converter URL encode / decode
Privacy and browser support
Input is processed in this browser. Do not use real keys or active sensitive credentials as demonstration data. Device features require browser support and your permission.