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Cron Expression Builder
Build and explain cron schedules
Runs locally in your browser
Quick presets
Cron fields (min hour day month weekday)
Result
* * * * *Every minute
How it works
Builds standard five-field cron expressions (minute hour day-of-month month day-of-week) and explains the schedule in plain English.
Who it's for: Developers configuring scheduled jobs on Linux, Kubernetes CronJobs, GitHub Actions, and cloud schedulers
Generates expressions in the common * * * * * format used by cron, crontab, and many PaaS schedulers.
Provides a human-readable description of when the job will run as you edit fields.
Offers quick presets for common patterns like every hour or every weekday morning.
How to use
- Pick a preset or set each field: minute, hour, day of month, month, and day of week.
- Copy the generated expression from the output area.
- Read the description below the expression to confirm it matches your intent.
- Paste the expression into crontab, your CI config, or your orchestrator’s schedule field.
- Test in a staging environment—cron dialects differ slightly between platforms.
Good to know
- Day of week: 0 and 7 are Sunday on most systems; 1 is Monday.
- Use */5 in the minute field for every five minutes; combine with ranges for business-hours-only jobs.
- Some platforms use six fields (seconds first)—this builder targets the classic five-field format.