Paste a cron expression
Use the standard 5-field format, or try one of the presets.
Cron Expression Explainer
Paste a 5-field cron expression to get a plain-English explanation, a field-by-field breakdown, and the next 5 upcoming run times.
How it works
Read the plain-English summary
See exactly what each field means and how they combine.
Check upcoming runs
View the next 5 times the schedule will actually fire.
FAQ
What format does this tool expect?
A standard 5-field cron expression: minute hour day-of-month month day-of-week, separated by spaces. It supports exact numbers, *, ranges like 1-5, steps like */15, and comma lists like 1,15,30.
How does it handle day-of-month and day-of-week together?
Following standard cron semantics, if both day-of-month and day-of-week are restricted (not *), the job runs when either condition is true, not only when both match.
Why might the next run times list be empty?
If the expression describes a date that can never occur, like day-of-month 30 in February only, the search gives up after looking about 4 years ahead and reports that no matching time was found.