Cron: Every 15 minutes (*/15 * * * *)
Plain-English meaning, run times, and visual editor for the */15 * * * * cron schedule. No sign-up required.
What does */15 * * * * mean?
The cron expression */15 * * * * translates to “Every 15 minutes”. It is one of the most commonly used schedules (every 15 minutes).
The `*/15` step lands on the quarter-hours - :00, :15, :30 and :45 - four times an hour, every hour. It maps neatly onto how people think about time ("quarter past", "half past"), which makes it a natural pick for anything a human might glance at: dashboards, status refreshes, or reports that should feel current without hammering the source. It is also frequent enough to catch problems quickly but sparse enough that a run comfortably finishes before the next one starts.
Use the builder above to tweak this expression and instantly see how the description and the next run times change.
Example runs from Jan 1, 2026 (UTC)
- Thu Jan 01 2026, 00:15 UTC
- Thu Jan 01 2026, 00:30 UTC
- Thu Jan 01 2026, 00:45 UTC
- Thu Jan 01 2026, 01:00 UTC
- Thu Jan 01 2026, 01:15 UTC
Related cron expressions
Frequently Asked Questions
About cron expressions and this generator.
It triggers the job four times an hour, specifically at minute 0, 15, 30, and 45.
No. Both representations translate to the exact same schedule and are parsed identically by the scheduler.