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Cron Expression Parser

Stop guessing what "*/15 9-17 * * 1-5" means.

Free foreverNo uploadsNo account
Cron expression (minute · hour · day of month · month · day of week)
Every 15 minutes, between 09:00 AM and 05:59 PM, Monday through Friday
*/15
Minute
9-17
Hour
*
Day of month
*
Month
1-5
Day of week
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01 · Real-world fits

Common use cases

  • Double-checking a crontab entry before deploying it
  • Understanding a cron schedule someone else wrote
  • Writing a new schedule from the common presets and tweaking it
  • Verifying day-of-week vs day-of-month behavior
  • Confirming a job will fire when you expect, in local time
02 · The honest pitch

Why Cron Expression Parser?

The next-run preview is computed locally against your own clock and timezone, so what you see is what your machine will do. Ranges, steps, lists, and names (MON, JAN) are all supported, including the classic cron quirk where day-of-month and day-of-week act as OR when both are set.

03 · Edge cases

Frequently asked questions

Standard 5-field crontab syntax: minute, hour, day of month, month, day of week — with *, ranges (1-5), lists (1,3,5), steps (*/15), and names (MON-FRI, JAN).