Base64 Encode / Decode
Use this base64 encode / decode entirely in your browser.
Encoded locally from UTF-8 text.
Calculations happen locally in your browser.
How to use this calculator
- Enter the labelled values and review the live result.
- Review the live result and use Copy result when you need to share it.
How the calculation works
Browser UTF-8 and Base64 primitives transform text without sending it anywhere.
Formula
Browser UTF-8 and Base64 primitives transform text without sending it anywhere.
Step-by-step calculation
- Enter the labelled values and review the live result.
- Browser UTF-8 and Base64 primitives transform text without sending it anywhere.
- Check the displayed result, then copy it if needed.
Worked example
HandyGrid encodes to QnJvd3NlciBUb29scw==.
Risk guidance
Frequently asked questions
Does this tool send my inputs anywhere?
No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.
How should I use the result?
Check that the entered units and values match your situation, especially around dates, breaks, and rounding.
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