Cron Expression Explainer
Explain cron expressions in plain English. Free online cron schedule parser for developers.
Frequently asked questions
- What do the five cron fields mean?
- In order they are minute (0-59), hour (0-23), day of month (1-31), month (1-12) and day of week (0-6, where 0 is Sunday). The tool labels each field of your expression.
- Does it support the seconds field?
- Yes. Switch the field order to With seconds and the parser expects six fields: second, minute, hour, day of month, month and day of week.
- Why does it report the wrong number of fields?
- Cron requires exactly five fields, or six when seconds are included. Extra or missing values are the usual cause, so check for double spaces in your expression.
- Does it tell me the next run time?
- No. This parser breaks the expression down and labels each field so you can read the schedule yourself; it does not compute upcoming execution times.
This tool runs entirely in your browser. No data is uploaded anywhere.