Cron expression generator

How a cron expression works

A cron expression has five fields separated by spaces: minute (0–59), hour (0–23), day of month (1–31), month (1–12) and day of week (0–7, where 0 and 7 both mean Sunday). Some schedulers, such as Quartz and Spring, add a seconds field in front for six in total. For example, 30 9 * * 1-5 means 09:30 every weekday.

Special characters

• * any value
• , a list, e.g. 1,15
• - a range, e.g. 9-17
• / a step, e.g. */10 for every 10
• Names such as JAN or MON, and shortcuts such as @daily or @hourly

Good to know

When both day of month and day of week are set, standard cron runs on days that match either one, so 0 0 1 * 1 runs on the 1st and on every Monday. Servers often run cron in UTC; tick Show times in UTC to compare. On daylight saving days, times that don’t exist are skipped and a fixed time that repeats is listed once, like classic cron, while schedules with * in the hour keep running through the repeated hour. Other schedulers may differ, so check yours.

Is my data safe?

Yes. Everything runs in your browser. Nothing you paste here is sent to any server.