Base64 Encode / Decode
Encode and decode Base64
Convert text to Base64 or decode Base64 strings back to readable text instantly.
Waiting for inputCharacters: 43Lines: 1Bytes: 43
Output will appear here.
No trackingRuns locally100% free
What this tool does
Base64 Encode / Decode converts Unicode text to Base64 and decodes Base64 strings back into readable text.
Privacy note
Your input is processed locally in your browser and is not uploaded to a server.
Common use cases
- Encode text for API testing.
- Decode Base64 values found in configuration files.
- Inspect encoded fragments in tokens or payloads.
- Convert text with Unicode characters without losing information.
FAQ
Does this tool support Unicode?
Yes. It uses TextEncoder and TextDecoder to handle Unicode text correctly.
Is my text uploaded to a server?
No. Encoding and decoding happen locally in your browser.
What happens if I decode invalid Base64?
The tool shows an error and does not produce decoded output.
Can I reuse the output as input?
Yes. The Use output as input button lets you chain conversions quickly.