Cron
0 9 * * 1-5
Desc
Weekdays at 09:00
Developer Tools
Crontab Expression Tutor
Edit standard five-field cron expressions with live plain-language descriptions, presets, and simulated next run times.
CrontabCronScheduling
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开发工具
Crontab Guru
0-59
0-23
1-31
1-12
0-7
0 * * * *
每小时的第 0 分钟
即将执行的时间（模拟）
语法参考
* — 任意值
, — 列举多个值，如 1,3,5
- — 范围，如 1-5
*/n — 每隔 n 个，如 */5
等待更新。
Use cases
- Author and validate cron expressions
- Learn cron field syntax
- Apply common scheduling presets
How to use
- Edit each time field
- Read the generated description
- Use presets for quick fills
Example input and output
FAQ
Seconds supported?
Standard crontab uses five fields (minute–weekday); this tool follows that format.
Are simulated times exact?
Simulation is illustrative—verify on your scheduler in production.
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