Developer Tools
Check whether a JWT is expired, valid, or not yet active.
Use this JWT expiry checker to inspect time-based JWT claims such as exp, iat, and nbf. It is useful for authentication debugging, token troubleshooting, and quickly seeing whether a token appears expired, active, or not yet valid.
Use this JWT expiry checker to inspect time-based JWT claims such as exp, iat, and nbf. It is useful for authentication debugging, token troubleshooting, and quickly seeing whether a token appears expired, active, or not yet valid.
Use jwt expiry checker when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
Find similar and supporting tools for adjacent actions and follow-up tasks.
Input
A copied JWT from an auth flow
Output
Expired, active, or not yet valid status
Checks the time claims without verifying the signature.
Fix: Check whether exp, nbf, or iat are actually present in the payload.
Fix: Remember that this tool only evaluates time-based claims.
Fix: Review how the tool presents times before comparing them manually.
It looks at exp, nbf, and iat claims and compares them to the current time.
No. It only evaluates time-based claims and token timing status.
It can show whether a token appears expired, active, or not yet valid based on the time claims it contains.
Yes. It works online in the browser.
Use the expiry checker when you mainly care about token timing. Use the parser when you want the full decoded structure and claims.