Cron Generator

The Cron Generator builds 5‑field cron expressions for UNIX‑like schedulers. Edit each field, preview the final expression, and copy it or a full crontab line with a command.

You can also toggle a sixth “seconds” field for systems that support it. Use this to quickly assemble schedules like every 5 minutes, nightly at midnight, or weekdays at 9:00.

Key features

• Editable minute/hour/day/month/weekday fields
• Optional seconds field for 6‑field cron
• Copy bare expression or full crontab line
• Local persistence of fields and options

Common use cases

• Run a job every N minutes using */N
• Nightly maintenance tasks at 00:00
• Weekday schedules without weekends

Privacy & security: generation runs locally in your browser.

1. Enter values for minute, hour, day of month, month, and day of week.
2. Use * for “every”, ranges like 1-5, lists like 1,15, and steps like */5.
3. Enable “Include seconds” if your system expects 6 fields.
4. Optionally enter a command to generate a crontab line.
5. Copy the expression or full line and paste into your scheduler.
6. Use “Sample” to load common schedules for quick starts.

Tips

• Day‑of‑week values: 0–6 (Sun–Sat) in most crons.
• Month values: 1–12.
• Prefer steps (*/5) for recurring intervals.

Troubleshooting

• Rejected by cron → Ensure only valid characters (digits, * , - /).
• Wrong frequency → Double‑check ranges and steps.
• Seconds unused → Disable the seconds field for standard 5‑field cron.