cron.wtf — generator

Cron generator — quick guide

What is a cron expression?

A cron expression is five fields — minute, hour, day-of-month, month, day-of-week — that tell a scheduler when to run a job. This generator writes the fields for you so you don't have to memorize the syntax.

Where does the expression go?

Paste it into a crontab (crontab -e), a CI schedule, a Kubernetes CronJob, GitHub Actions on.schedule, or any tool that accepts standard cron. Most cloud schedulers use UTC — pick UTC above to preview those run times.

Want to check an expression you already have?

Use the reader to paste any cron expression and see its plain-English meaning and next runs.