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Cron Expression

Translate a cron expression into plain English and list its next run times, so you can confirm a schedule means what you think before it silently does not. Build one from scratch with the field editor.

Runs entirely in your browser

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How it works

  1. 01Type a cron expression, or start from a preset.
  2. 02Read the plain-English translation to confirm it means what you think.
  3. 03Check the next five run times against your local clock.

Questions

What do the five fields mean?
In order: minute, hour, day of month, month, day of week. An asterisk means every value, */15 means every fifteenth, and 1-5 means a range — so "0 9 * * 1-5" is 9am on weekdays.
Are the times shown in UTC?
They are shown in your browser's local timezone. Most servers run cron in UTC, so if the schedule is destined for one, account for the offset — this is the single most common cron mistake.
Is there a catch — a limit, a watermark, a sign-up?
None. Because the work happens on your machine rather than a server, there is no per-file cost to recover and therefore nothing to meter. No account, no queue, no watermark.