Developer Tools

Cron Expression Tester

Parse and test cron expressions, see them explained in plain English, and view upcoming run times in any timezone

5 fields: minute hour day-of-month month day-of-week. Supports *, ,, -, /, month/day names, and @hourly, @daily, etc.

*/15
Minute
0-59
9-17
Hour
0-23
*
Day (Month)
1-31
*
Month
1-12
1-5
Day (Week)
0-6 (Sun=0)

Plain English

Every 15 minutes from 09:00 through 17:59 on Monday through Friday

Next 7 Runs

  1. #1Tue, Apr 28, 2026, 17:45in 14 minutes
  2. #2Wed, Apr 29, 2026, 09:00in 15 hours
  3. #3Wed, Apr 29, 2026, 09:15in 15 hours
  4. #4Wed, Apr 29, 2026, 09:30in 15 hours
  5. #5Wed, Apr 29, 2026, 09:45in 16 hours
  6. #6Wed, Apr 29, 2026, 10:00in 16 hours
  7. #7Wed, Apr 29, 2026, 10:15in 16 hours
Syntax Reference

* β€” every value

a,b,c β€” list of specific values

a-b β€” range from a through b

*/n β€” every n values

a-b/n β€” every n in range a-b

JAN-DEC β€” month names accepted

SUN-SAT β€” weekday names (SUN=0, SAT=6)

Macros: @hourly, @daily, @weekly, @monthly, @yearly, @midnight

Note: when both day-of-month and day-of-week are restricted, a day matches if either matches (POSIX behavior).