Cron Parser

Cron Parser

The Cron Parser explains cron expressions in plain English and previews when they will actually run. Cron’s five fields — minute, hour, day-of-month, month and day-of-week — are powerful but easy to get wrong; this tool removes the guesswork.

Why use Cron Parser

  • Human-readable explanation of any 5-field cron expression.
  • Preview of the next ten execution times in UTC and your local zone.
  • Validation with clear errors for malformed expressions.
  • One-click presets for common schedules.

How to use Cron Parser

  1. 1Enter an expression. Type a 5-field cron expression, or pick a preset like “Every 5 minutes”.
  2. 2Read the explanation. See the plain-English meaning and whether the expression is valid.
  3. 3Check the next runs. Review the next ten execution times in UTC and your local timezone.

Frequently asked questions

What cron format is supported?
Standard 5-field cron: minute, hour, day-of-month, month, day-of-week — with ranges, lists, and step (*/n) syntax.
Which timezone are the next runs in?
Next execution times are shown in both UTC and your local timezone so there is no ambiguity.
Can I use presets?
Yes — one click fills common schedules like every 5 minutes, hourly, daily at 09:00, weekdays, and monthly.

Developer notes

Standard cron has no “seconds” field — the smallest interval is one minute. Day-of-month and day-of-week are OR-combined when both are restricted, which surprises many people.

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