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Free Developer Tool

Cron Expression Builder

Build cron schedules visually, get a plain-English explanation and the next 5 run times. Paste any expression to validate it.

100% Free No signup Runs in your browser No uploads
Quick presets

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Frequently asked questions

What do the 5 cron fields mean?

From left to right: minute (0-59), hour (0-23), day of month (1-31), month (1-12), day of week (0-6, where 0 is Sunday). So "0 9 * * 1-5" means 9:00 AM, Monday to Friday.

What happens when both day-of-month and day-of-week are set?

Standard cron runs when EITHER matches. For example "0 9 1 * 1" runs at 9 AM on the 1st of the month AND every Monday. This tool follows that rule when computing the next run times.

Are the next run times in my timezone?

Yes. The next 5 runs are computed in your browser’s local timezone. If your server runs in a different timezone (for example UTC), double check the schedule against that timezone before deploying.

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