Cron Expression Parser help

Type a cron expression and get a readable description plus the next run times.

Fields

Five fields: minute hour day-of-month month day-of-week. Add a sixth field at the front for seconds.

Each field accepts *, a number, a range (1-5), a list (1,15,30), a step (*/10, 5/15), and names for months (JAN–DEC) and weekdays (SUN–SAT). ? is treated as *.

Next runs

Times are computed in UTC by stepping forward from now and testing each minute (or second for a 6-field expression). If day-of-month and day-of-week are both restricted, a run matches when either is satisfied, which is how standard cron behaves.

Notes

• The search gives up after about five years, so a schedule that never fires shows no runs.
• Nothing is uploaded; parsing and the run search happen in your browser.

Everything runs in your browser. Nothing you enter or drop is uploaded.