What Is a Cron Expression?
A cron expression describes a recurring schedule using time fields. Cron implementations can differ in supported fields and aliases.
How to Check a Schedule
Enter an expression and inspect the displayed description. Use the on-page symbol reference to understand ranges, lists and step values, then verify compatibility with your scheduler.
Cron Expression Example
- */10 * * * * → Every 10 minutes in a standard five-field cron schedule.
Planning Scheduled Tasks
- Use schedules for routine automation such as reports or maintenance.
- Check the scheduler's time zone and daylight-saving behavior.
- Confirm the expression in the system that will run it before enabling a job.
Frequently Asked Questions
Does this tool run a cron job?
No. It validates and explains an expression; configure execution in your own scheduler.
What does an asterisk mean?
It represents any value in the relevant field.