Cron Expression Parser

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

Cron expression

Enter a five-field cron expression, then press Enter or Parse 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)

Fields are shown in order: minute, hour, day of month, month, and day of week.

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

Cron dialects differ. Some schedulers support extra fields or special syntax, and day-of-week numbering can vary. The field breakdown is a simple explanation of common five-field syntax; verify the final schedule against the scheduler you use.