Cron Expression
Generate and parse cron expressions, preview next run time
Cron Expression is a free online Developer tool. Generate and parse cron expressions, preview next run time Related terms: cron · crontab · 定时任务 · schedule. Use it on this page without signing in.
| # | 执行时间 | |
|---|---|---|
| 1 | 2026-09-21 09:00:00 周一 | |
| 2 | 2026-09-21 09:00:00 周一 | |
| 3 | 2026-09-21 09:00:00 周一 | |
| 4 | 2026-09-21 09:00:00 周一 | |
| 5 | 2026-09-21 09:00:00 周一 |
支持 5 字段标准 cron：分(0-59) 时(0-23) 日(1-31) 月(1-12) 周(0-7，0/7 均为周日)。支持 * / - , 语法。
使用说明
- 通过可视化选择器勾选分/时/日/月/周，自动生成表达式
- 或直接输入 Cron 表达式，下方解析其含义
- 自动计算并预览接下来几次执行时间
- 一键复制表达式到 crontab
常见问题
- 5 段和 6 段表达式区别？ 5 段不含秒（标准 crontab），6 段含秒（Quartz/Spring）
- 数据处理安全吗？ 解析与计算全部本地完成
- 为什么周日用 0？ Cron 中 0 和 7 都表示周日
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FAQ about Cron Expression
What can Cron Expression do?
Cron Expression is a Developer tool. Generate and parse cron expressions, preview next run time You can finish the job on this page.
Who should use Cron Expression?
Anyone handling cron · crontab · 定时任务 · schedule who does not want to install desktop software can use Cron Expression in the browser.
Is Cron Expression safe? Is my data uploaded?
This tool runs in your browser. We do not collect the content you enter into Cron Expression just because you used it.
What similar tools exist?
Related tools in the same Developer group are listed at the bottom of this page.