Visual Cron Expression Generator - Crontab Next Runs Preview

Create Cron expressions visually and preview next runs. Local-only privacy—no uploads. Explain */5 in plain English and copy crontab strings. Try now.

Every min
Everyminutes
Plain-English Description
  • 2026-10-24 12:00:00
  • 2026-10-25 12:00:00
  • 2026-10-26 12:00:00

* Calculated from your browser time

How to Use

  1. Choose a time dimension (minute/hour/day/week/month).
  2. Select options visually and the Cron string updates instantly.
  3. Review the plain-English explanation and next-run preview.
  4. Copy the expression into crontab or your scheduler.

Core Features

  • Natural Language to Cron: Explain complex expressions in human-readable English.
  • Next Execution Preview: Preview the next 5 run times to validate schedules fast.
  • Visual Scheduler: Build schedules with tabs for minutes, hours, days, weeks, and months.
  • Crontab Compatible: Output common 5-field crontab expressions ready to paste.
  • Keep it private: Run locally so schedules are never uploaded.

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Calculation Logic

  • Cron uses 5 fields: minute, hour, day-of-month, month, day-of-week.
  • We parse wildcards, ranges, and step values (e.g., */5) into UI state, then generate the string back.
  • Next-run preview iterates forward from current browser time to compute the next N matching timestamps.

FAQ

What does '*/5 * * * *' mean?

It means “run every 5 minutes.” The tool explains it in plain English and shows the matching visual schedule.

How to schedule a job for 8 AM every Monday?

Use the Weekly tab, select Monday, and set hour to 08. The tool generates 0 8 * * 1.

Is my data safe (local/privacy)?

Yes. Everything runs locally with no uploads, storage, or server processing.

Is it free? Any limits?

It’s free. We preview the next 5 runs by default so you can verify quickly.

Why do preview times differ from my server?

Cron runs in the server timezone, while preview uses your browser timezone. Always confirm the target timezone before deploying.