What is a cron expression?

A cron expression is a string of 5 fields (minute, hour, day of month, month, day of week) used to schedule recurring tasks in Linux/Unix, GitHub Actions, AWS EventBridge, Kubernetes CronJobs, and many CI/CD systems.

What is the cron format?

The format is: minute hour day-of-month month day-of-week. Minute is 0-59, hour is 0-23, day-of-month is 1-31, month is 1-12, day-of-week is 0-6 (Sunday=0, Saturday=6).

What are common cron schedules?

Every minute: * * * * *. Daily at midnight: 0 0 * * *. Weekdays at 9am: 0 9 * * 1-5. Every 15 minutes: */15 * * * *. First of every month: 0 0 1 * *.

Can I use this for GitHub Actions?

Yes. GitHub Actions uses standard cron syntax. Copy the generated expression into your workflow YAML file under schedule: - cron:.

Cron Expression Generator

Free online cron expression generator. Build cron expressions visually without memorizing syntax. For crontab, GitHub Actions, AWS EventBridge, Kubernetes CronJobs. With quick presets.

Cron Expression Generator

Build cron expressions visually. No more memorizing cron syntax — pick your schedule and copy the result.

Your cron expression

* * * * *

Runs every minute

Minute (0-59)

Hour (0-23)

Day of month (1-31)

Month (1-12)

Day of week (0-6, 0=Sun)

Quick presets

Cron format reference

┌───── minute (0-59)
│ ┌───── hour (0-23)
│ │ ┌───── day of month (1-31)
│ │ │ ┌───── month (1-12)
│ │ │ │ ┌───── day of week (0-6, Sunday=0)
* * * * *

How to Use the Cron Expression Generator

1Set each field with the pickers — minute, hour, day of month, month and day of week.
2The cron expression builds live as you click; copy it when it matches your schedule.
3Paste an existing expression to decode it into human-readable language.
4Check the next-run preview to confirm the schedule fires when you expect.