An interactive tool

Cron expressions,
decoded.

Paste a cron schedule and see it explained field by field, with the next times it will run. Handles the standard five fields and the six-field form with seconds.

5-field

Field by field

Next runs

    Try a preset

    Reference

    FieldRangeNames
    • *  any value — every unit in the field
    • ,  list — e.g. 1,15,30
    • -  range — e.g. 9-17
    • /  step — e.g. */15 or 0-30/5
    • ?  any value — treated as * in the day fields
    • Shortcuts — @hourly @daily @weekly @monthly @yearly @reboot
    • Six fields — a leading field adds seconds
    • Day match — if both day-of-month and day-of-week are set, either one matching triggers the run
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