Epoch converter
Convert Unix timestamps (seconds or ms) to local, UTC, and ISO 8601 — and back.
Timestamp & Cron
A browser-native timestamp & cron toolkit
Convert epoch timestamps to local, UTC, and ISO time, and turn cron expressions into plain English with upcoming run times — all in your browser.
Computed locally in your browser using your own time zone — no server round trips.
Runs locally • Saves automatically • Share via link
Browser-native
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Timestamp & Cron
Timestamp · 1700000000
UTCTue, 14 Nov 2023 22:13:20
ISO2023-11-14T22:13:20Z
0 9 * * 1-5
At 09:00 on Mon, Tue, Wed, Thu, Fri.
Next runs
- Mon 09:00
- Tue 09:00
- Wed 09:00
Computed locally in your browser's time zone.
What's inside
Stop guessing at timestamps and cron.
Cron explainer
Turn a cron expression into plain English so you know exactly what it does.
Next run times
Preview the next scheduled runs of any cron expression in your time zone.
Timestamp and cron utilities for developers
Convert epoch timestamps to local, UTC, and ISO time, and turn cron expressions into plain English with upcoming run times — all in your browser.
Why use it
Why use this timestamp & cron toolkit
Convert Unix timestamps in seconds or milliseconds to readable dates.
See local, UTC, ISO 8601, and relative time side by side.
Explain any 5-field cron expression in plain English.
Preview the next scheduled run times in your time zone.
How it works
How to convert timestamps and read cron
1 Paste an epoch timestamp or a date string to convert it.
2 Or type a cron expression to see what it means.
3 Read the next run times — everything is computed locally.
Use cases
Timestamp and cron use cases
Debug a log timestamp by converting epoch to a readable date.Double-check a cron schedule before deploying a job.Confirm when a cron expression will actually run next.Convert between seconds and milliseconds quickly.
FAQ
Timestamp and cron questions
Does it handle seconds and milliseconds?
Yes. It auto-detects whether a numeric timestamp is in seconds or milliseconds.
What cron format is supported?
Standard 5-field cron: minute, hour, day-of-month, month, and day-of-week, including ranges, lists, and steps.
Which time zone is used?
Conversions and next-run previews use your browser's local time zone, alongside UTC.
Is anything sent to a server?
No. All conversions and cron calculations run locally in your browser.