Developer tools

JWT Decode

Decode a JSON Web Token header and payload without sending it anywhere. Nothing you enter leaves your browser.

Paste JWT

Result

Your result will appear here.

Simple by design

Get the answer, without the clutter.

FormatCalc is built for quick work. This jwt decode runs entirely on your device, so private text and data stay private.

01

Enter or paste your information.

02

Transform it with one click.

03

Copy, use, or download your result.

Common questions

Using the JWT Decode

Is the JWT Decode free to use?

Yes. FormatCalc's JWT Decode is free to use with no account required.

Is my data private when I use the JWT Decode?

Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.

How do I use the JWT Decode?

Paste or type your input, select any available options, and choose Decode JWT. You can then copy the result.