Cron Expression Parser

Any cron expression in plain English, with its next five run times.

Cron expression

Meaning

Examples

Common schedules

Seconds

Every 10 seconds */10 * * * * *
Every 30 seconds */30 * * * * *

Minutes

Every minute * * * * *
Every 2 minutes */2 * * * *
Every 5 minutes */5 * * * *
Every 10 minutes */10 * * * *
Every 15 minutes */15 * * * *
Every 20 minutes */20 * * * *
Every 30 minutes */30 * * * *

Hours

Every hour 0 * * * *
Every 2 hours 0 */2 * * *
Every 3 hours 0 */3 * * *
Every 4 hours 0 */4 * * *
Every 6 hours 0 */6 * * *
Every 8 hours 0 */8 * * *
Every 12 hours 0 */12 * * *
Every hour, 9am–5pm on weekdays 0 9-17 * * 1-5

Days

Every day at midnight 0 0 * * *
Every day at 1am 0 1 * * *
Every day at 2am 0 2 * * *
Every day at 6am 0 6 * * *
Every day at 8am 0 8 * * *
Every day at 9am 0 9 * * *
Every day at noon 0 12 * * *
Every day at 5pm 0 17 * * *
Every day at 6pm 0 18 * * *
Twice a day 0 0,12 * * *
Every other day 0 0 */2 * *

Weeks

Every weekday at 9am 0 9 * * 1-5
Every Saturday and Sunday 0 0 * * 6,0
Every week 0 0 * * 0
Every Monday 0 0 * * 1
Every Friday 0 0 * * 5
Every Saturday 0 0 * * 6

Months and years

Every month 0 0 1 * *
On the 15th of every month 0 0 15 * *
Every quarter 0 0 1 */3 *
Every 6 months 0 0 1 */6 *
Every year 0 0 1 1 *

Questions

Why are run times in UTC by default?

Cron has no time zone of its own, and many schedulers, such as GitHub Actions, run in UTC. If yours doesn't, pick its zone in the Time zone menu.

Does it support seconds, or shortcuts like @daily?

Yes. With 6 fields, the first is seconds. @yearly, @monthly, @weekly, @daily, @hourly and @reboot are all understood.

Can I build an expression without writing it?

Yes. Open "Build one" under the tool and pick the minute, hour, day, month and weekday. The expression and the choices stay in sync.

What happens with an invalid expression?

You get an error that names the problem: too few fields, a value out of range, or an unknown shortcut.