Cron Expression Generator

Build cron expressions visually and see the next run times in plain English. Choose from common presets — every minute, hourly, daily, weekly — or build a custom schedule for any automation task. (Free: 10 uses/day)

0 * * * *

At minute 0 of every hour

Minute

0-59

Hour

0-23

Day of Month

1-31

Month

1-12

Day of Week

0-6 (Sun-Sat)

Next 5 Runs

#12026/3/23 下午6:00:55

#22026/3/23 下午7:00:55

#32026/3/23 下午8:00:55

#42026/3/23 下午9:00:55

#52026/3/23 下午10:00:55

Usage Examples

crontab: 0 * * * * /path/to/command

GitHub Actions: cron: '0 * * * *'

node-cron: cron.schedule('0 * * * *', callback)

Frequently Asked Questions

What is a cron expression?▼

A cron expression is a string of 5 fields (minute, hour, day-of-month, month, day-of-week) that defines a recurring schedule. For example, '0 9 * * 1' means every Monday at 9:00 AM. Cron is used in Linux, CI/CD pipelines, cloud functions, and task schedulers.

How do I write a cron expression for every 5 minutes?▼

Use '*/5 * * * *'. The */5 in the minute field means 'every 5th minute'. Similarly, */10 means every 10 minutes, and */30 means every 30 minutes.

What is the difference between cron and crontab?▼

Cron is the scheduling daemon (background service) that runs scheduled tasks. Crontab is the configuration file where you define your cron expressions and the commands to run. You edit it with 'crontab -e' on Linux/macOS.

Does cron support seconds?▼

Standard Unix cron uses 5 fields and does not support seconds. Some systems like Spring Scheduler and Quartz use 6 or 7 fields that include seconds. This generator uses the standard 5-field format compatible with most platforms.

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