Cron Expression Helper

Explain five-field cron schedules and preview likely next runs

at minute 0, at hour 9, every day of the month, every month, dow 1 through 5

0

minute

9

hour

*

dom

*

month

1-5

dow

Presets

Next runs (local time, approximate)

  • 7/20/2026, 9:00:00 AM
  • 7/21/2026, 9:00:00 AM
  • 7/22/2026, 9:00:00 AM
  • 7/23/2026, 9:00:00 AM
  • 7/24/2026, 9:00:00 AM

Results

Export schedule

Cron dialects differ (Linux crontab vs Jenkins vs cloud schedulers). Some use Sunday as 0 or 7; some support seconds as a 6th field. Always verify on your platform.

How to use

Follow these steps to get a result

  1. Enter a 5-field expression: minute, hour, day-of-month, month, day-of-week.

  2. Use presets for common schedules, then tweak fields.

  3. Read the human explanation and approximate next run times.

  4. Export the schedule, then confirm behavior on your scheduler — platforms vary.

Features

What this tool includes

  • 5-field validation

  • Human-readable explain

  • Common presets

  • Next-run preview

  • Platform warning

  • Exportable schedule (Copy / CSV / PDF)

FAQ

Common questions about this tool

This helper focuses on classic 5-field cron. For 6-field flavors, treat the first field as seconds on your platform and validate there.

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