A simple encoding
Input
Hello
Result
SGVsbG8=
CONVERTER · FREE ONLINE TOOL
Base64 encoder and decoder
Convert readable UTF-8 text into standard Base64, or decode a Base64 string back into text. Use it for small test fixtures and debugging text payloads without uploading your input.
Text ↔ Base64Processed in your browser
No account requiredRuns in your browserFree to use
QUICK START
How to use this tool
- Choose Encode text or Decode Base64 from Operation.
- Paste the source text or standard Base64 string into Input.
- Run the conversion, inspect the result, and copy it.
Example input and output
Unicode text encoding
Input
Hello 世界
Result
SGVsbG8g5LiW55WM
When to use it
Prepare a text test fixture
Encode a short string into a repeatable Base64 value for tests that expect encoded text.
Inspect an encoded text payload
Decode a value you know contains UTF-8 text to see its readable representation. Do not treat Base64 as a security boundary.
What to know before you use it
This tool handles standard Base64 containing UTF-8 text. It is not a binary file, image, JWT, or Base64URL decoder. Invalid Base64 or invalid UTF-8 bytes produce an error. Base64 is encoding, not encryption.
Frequently asked questions
Can I encode non-English text?
Yes. Text is converted to UTF-8 bytes before Base64 encoding, so Unicode text such as Hello 世界 is supported.
Is Base64 encryption?
No. Anyone with the value can decode it. Encoding provides no confidentiality and does not replace encryption.
Why does decoding fail?
The input may not be standard Base64, or the decoded bytes may not be valid UTF-8. Binary files and Base64URL strings are outside this tool’s supported input format.
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