JWT Expiration & Claims Checker
Understanding the lifecycle of your authentication token is critical for security. Our decoder breaks down the payload so you can see exactly when your session is set to expire.
When to use this solution:
Use this when you're troubleshooting session timeouts or verifying that your auth server is issuing tokens with the correct lifespan.
Common Use Cases
1Step-by-Step Guide
Paste your encoded token
Copy the JWT from your browser's local storage or a network request and paste it into the input box.
View the Payload
Look at the purple-coded 'Payload' section which contains the token's claims.
Identify 'exp' claim
Locate the 'exp' field. This value is a Unix timestamp representing when the token becomes invalid.
Confirm issue time
Check the 'iat' field to see exactly when the token was generated by your identity provider.
Ready to get started?
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Check Token ExpirationFrequently Asked Questions
How do I read the timestamp?
JWT timestamps are in seconds since the Unix Epoch. You can use an online timestamp converter to see the human-readable date.
Can I edit the expiration time?
No, this tool is a decoder. Modifying a token would invalidate its signature, making it useless for authentication.