Convert a JWT exp timestamp
JWT exp, iat, and nbf claims are usually Unix timestamps in seconds.
Input
1735689600Output
2025-01-01T00:00:00.000ZDeveloper toolsRuns locally
Local Unix Timestamp Converter
Convert Unix timestamps, ISO strings, and local dates in your browser when debugging logs, JWT claims, schedulers, and API events.
timestampunixepochdatetime
Privacy note: this tool runs in your browser; inputs are not uploaded. How privacy works
Unix timestamp
Converted time
Converted timestamps and date values will appear here.
Timestamp Converter examples
Timestamp Converter use cases
- Debug JWT expiration and issued-at claims.
- Read timestamps from logs or webhook payloads.
- Compare UTC and local times during incident response.
How Timestamp Converter works
- The tool parses Unix timestamps, ISO strings, or date input.
- It renders equivalent UTC and local time values.
- All conversion happens in the browser.
Timestamp Converter mistakes to avoid
- Unix seconds and JavaScript milliseconds differ by a factor of 1000.
- Timezone display does not change the actual instant in time.
- Some logs omit timezone information, which can cause ambiguity.
Timestamp Converter privacy and processing
No uploadBrowser-localNo accountThis tool runs in your browser. Inputs are processed on your device and are not uploaded to LocalTools.
How LocalTools handles local and server-assisted toolsTimestamp Converter related workflows
Check JWT expiration
Use timestamp conversion to understand exp, iat, and nbf claims.
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Timestamp Converter FAQ
Are JWT timestamps seconds or milliseconds?
JWT NumericDate values such as exp are normally Unix timestamps in seconds.
Why does local time differ from UTC?
They are two displays of the same instant using different time zones.