Cron Expression Explainer
Decode a cron schedule, in plain English.
Runs entirely in your browser — nothing you enter is uploaded, logged, or tracked.
Translate a cryptic crontab line into plain English and preview the next times it will fire — so you can be sure “*/15 9-17 * * 1-5” means what you think it does.
Frequently asked questions
Which cron syntax is supported?
Standard 5-field crontab: minute, hour, day-of-month, month, and day-of-week, including ranges (1-5), steps (*/15), lists (1,15,30), and names like MON or JAN.
Does it show the next run times?
Yes — it computes the upcoming scheduled times from your expression locally, so you can confirm the schedule at a glance.