Cron expression for every 15 minutes
*/15 * * * *
Open in the tool →
*/15 runs four times an hour — on the quarter hours — a popular middle ground between “constant” and “hourly”.
In plain English: “Every 15 minutes”
Field breakdown
| Minute | */15 |
| Hour | * |
| Day of month | * |
| Month | * |
| Day of week | * |
Next run times (UTC)
- Mon, Aug 24, 2026 · 11:15 AM UTC in 6 minutes
- Mon, Aug 24, 2026 · 11:30 AM UTC in 21 minutes
- Mon, Aug 24, 2026 · 11:45 AM UTC in 36 minutes
- Mon, Aug 24, 2026 · 12:00 PM UTC in 51 minutes
- Mon, Aug 24, 2026 · 12:15 PM UTC in 1h 6m
See these in your own timezone.
When to use it
- Fetching data from a source that updates a few times an hour.
- Sending queued digest emails or Slack summaries.
- Regular backups of small, fast-changing data.
Related schedules
Good to know
- 0,15,30,45 * * * * is an equivalent, more explicit way to write the same schedule if you prefer a list over a step.