Guide
Epoch converter (Unix timestamp to date)
Unix epoch time counts seconds (or milliseconds) since 1970-01-01 UTC. APIs, databases, and log lines love epoch; humans do not. Convert both directions locally when debugging JWT exp claims, webhook payloads, or log correlation.
Seconds vs milliseconds (common bug)
JavaScript Date.now() returns milliseconds; many Linux logs use seconds. If your converted date lands in 1970 or 5138, divide or multiply by 1000 once and retry. JWT exp claims are usually seconds since epoch.
Copy-paste epoch examples to test
Seconds: 1700000000 → 2023-11-14 UTC\nMilliseconds: 1700000000000 → same instant\nZero: 0 → 1970-01-01 UTC\nNow: paste Date.now() from devtools\nNegative (pre-1970): rare in APIs but valid in some libraries
Timezone and daylight saving
Epoch is UTC by definition; local display depends on your browser timezone. When comparing server logs, convert to UTC first, then to local for incident timelines spanning DST changes.
Pair with cron and JSON tools
Schedule jobs with the cron expression generator, then sanity-check next run epochs here. Pretty-print JSON logs before hunting timestamp fields.
Who this guide is for
Backend and mobile devs correlating JWT exp, webhook timestamps, and log lines across timezones.
Best practices for epoch converter (unix timestamp to date)
Keep regex, cron, and epoch tools in the same tab workflow when debugging scheduled jobs—nothing uploads to a server. If your first pick is taken, generate more options and test for two weeks before rebranding. Toolminator generates ideas only and does not verify live availability on any platform—always check handles and names yourself. Start from the search intent on this page—not a generic template—so your profile, post, or plan matches what people expect when they land here.
FAQ
Is epoch converter the same as Unix timestamp?
Yes—Unix timestamp usually means seconds since 1970-01-01 UTC; some systems use milliseconds.
Why does my API timestamp look wrong?
Check unit (s vs ms), timezone (UTC vs local), and whether the field is string or number in JSON.
Are timestamps uploaded?
No—conversion runs in your browser only.
Can I convert human date to epoch?
Yes—pick local datetime in the tool and copy epoch seconds or milliseconds for test fixtures.
Related guides
Suggested tools
Free tools that pair with this workflow—same recommendations as on tool pages.