JWT Timestamp Converter
Find out when a JWT was issued, when it expires — and whether it's still valid.
| Claim | Value | Date (local) | Relative |
|---|
Create an expiry
—iat (now)
—exp
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How it works
JWT time claims are Unix timestamps in seconds: iat (issued at), nbf (not before) and exp (expiration). A token is valid when nbf ≤ now < exp. The tool decodes the payload locally — the signature isn't checked, so never trust a token's content just because it decodes. Servers usually allow a small clock skew (30–60 seconds).
FAQ
My exp looks like year 50000?
The value is probably in milliseconds instead of seconds — a common bug. JWT requires seconds.