Every 15 Minutes Cron Expression
Runs at :00, :15, :30, and :45 past every hour.
Expression
*/15 * * * *Try it in the tester →Field Breakdown
*/15
minute
*
hour
*
day-of-month
*
month
*
day-of-week
minuteevery 15 minutes, starting at 0
hourevery hour (0–23)
day-of-monthevery day (1–31)
monthevery month (1–12)
day-of-weekevery weekday (0=Sun – 6=Sat)
How It Works
Step expression `*/15` in the minute field — fires four times per hour, aligned to quarter-hour boundaries.
Example Run Times
- 12:00:00
- 12:15:00
- 12:30:00
- 12:45:00
- 13:00:00
Frequently Asked Questions
Why not `0,15,30,45 * * * *`?
Both work. `*/15` is shorter and conveys the intent directly. Most cron implementations parse them identically.