Cron Expression Parser

Turn a cron expression into a plain-English schedule — no data leaves your machine.

Try:

Supported syntax

Standard 5-field cron: minute, hour, day-of-month, month, day-of-week. Each field accepts *, a number, a range (1-5), a step (*/5 or 1-5/2), or a comma list of numbers.

Common uses

Double-checking a schedule before deploying a scheduled job (CI pipeline, cron job, Kubernetes CronJob)
Understanding a cron expression you inherited from someone else’s config
Learning cron syntax by experimenting with ranges, steps and lists

FAQ

Does this support 6-field cron (with seconds)?

No — only the standard 5-field Unix cron format (minute, hour, day-of-month, month, day-of-week).

Can I use month or weekday names like JAN or MON?

Not yet — use numeric values (1-12 for months, 0-6 for weekdays, where 0 is Sunday).

What does a comma list mixed with a range mean, like 1,3-5?

That combination isn’t supported — use a plain list (1,3,5) or a single range (3-5), not both mixed in one field.