Base64 Text | How to use and interpret results
Encode UTF-8 text as Base64 or decode that representation back into text. It is useful for checking a transport representation, including Korean text, without treating it as encryption.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
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How to use this tool
Paste plain text to encode or Base64 text to decode and select the direction. A data-URL prefix and the URL-safe Base64 variant are distinct from this plain-text input.
Results and examples
Hello encodes to SGVsbG8= and decodes back to Hello. Keep the padding equals sign when copying a result instead of deleting it as if it were punctuation.
Worked example
Hello encodes to SGVsbG8= and decodes back to Hello. Keep the padding equals sign when copying a result instead of deleting it as if it were punctuation.
Limitations
- Anyone who understands Base64 can reverse it.
- This is not a general binary-file or guaranteed Base64url decoder.
Fields
| Field | Guidance and constraints |
|---|---|
| Encode (text → Base64) | Check the unit and format displayed beside this field. |
| Decode (Base64 → text) | Check the unit and format displayed beside this field. |
| Input | Check the unit and format displayed beside this field. |
| Result | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
What does SGVsbG8= decode to?
Hello encodes to SGVsbG8= and decodes back to Hello. Keep the padding equals sign when copying a result instead of deleting it as if it were punctuation.
Can this encrypt a password?
Anyone who understands Base64 can reverse it. This is not a general binary-file or guaranteed Base64url decoder.
