Cron Expression Generator

Generate cron expressions visually with intuitive controls. Create schedules for automation and see plain English explanations.

minutes
hours

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Understanding Cron Expressions

Cron Format

Cron expressions consist of 5 fields representing time units:

* * * * *
│ │ │ │ │
│ │ │ │ └─── Day of Week (0-7, 0 and 7 = Sunday)
│ │ │ └───── Month (1-12)
│ │ └─────── Day of Month (1-31)
│ └───────── Hour (0-23)
└─────────── Minute (0-59)

Special Characters

  • * (asterisk) - Any value
  • , (comma) - Value list separator
  • - (hyphen) - Range of values
  • / (slash) - Step values
  • L - Last day of month (day field only)

Common Examples

0 0 * * *     → Every day at midnight
0 2 * * 1-5   → Weekdays at 2 AM
*/15 * * * *   → Every 15 minutes
0 0 1 * *     → 1st of every month at midnight
0 0 1,15 * *  → 1st and 15th of every month at midnight
0 0 * * 0     → Every Sunday at midnight
0 6 * * 1,5   → Every Monday and Friday at 6 AM