Cron Expression Parser

Validate cron expressions, understand each field, and preview upcoming scheduled runs.

Cron expression

Try an example

Field positions

*/5

Minute

0–59

Hour

0–23

Day of month

1–31

Month

1–12

Day of week

0–7 (Sunday)

Cron syntax guide

Standard five-field cron format:

minute hour day-of-month month day-of-week

*Any allowed value

,Separate multiple values, e.g. 1,3,5

-Specify a range, e.g. 1-5

/Specify steps, e.g. */10

Note: Cron dialects differ. Day-of-week numbering and the interaction between day-of-month and day-of-week can vary across schedulers. Use this tool to inspect expressions, then verify behavior against the scheduler you use.