Is this tool free to use?

Yes, this tool is completely free to use. No registration, subscription, or payment is required. All processing happens directly in your browser.

Does this tool upload data to a server?

No. All processing happens locally in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy and security. The tool works even when offline.

Does this tool work on mobile devices?

Yes, this tool is fully responsive and works on all modern browsers including Chrome, Safari, Firefox, and Edge on desktop, tablet, and mobile devices.

Is an internet connection required to use this tool?

No internet connection is required after the page loads. Since all processing happens in your browser, you can use this tool offline once the page is loaded.

Is there a file size limit?

There is no server-side file size limit since files are processed locally in your browser. The only limitation is your device's memory (RAM). For very large files, we recommend processing them in smaller chunks.

⏰ Cron Expression Parser

Free online cron expression parser. Convert complex cron expressions into readable human language. Supports standard 5-field and 6-field (with seconds) formats. Real-time parsing showing next run time and frequency description. Client-side only.

Cron Expression

Every 5 min Every hour Daily 9am Weekdays 9am Every Sunday 1st of month Every 4h 30m

Click "Parse" to see the explanation

How to Use the Cron Expression Parser

Converting with the Cron Expression Parser takes just three steps:

Enter the Value to Convert
Type or paste the value you want to convert into the input area. The cron expression parser supports various input formats — just enter your data and the tool will recognize it automatically.
Select Source and Target Formats
Choose the source format and the target format from the available options. The tool supports bidirectional conversion where applicable. Your settings are applied instantly.
Get Your Conversion Result
The converted result appears in real time. Click "Copy" to copy it to your clipboard, or "Download" to save it. All conversion is done locally on your device with no server upload.

FAQ

Cron表达式中的星号(*)是什么意思？

星号(*)表示所有可能的值。例如，分钟位置的星号表示每分钟，小时位置的星号表示每小时。在标准Cron表达式中，* * * * * 表示每分钟执行一次。

Cron表达式包含几位？

标准Cron表达式包含5个字段（分时日月周），部分实现支持6字段（增加秒字段）。本工具同时支持5字段和6字段格式，自动识别。

特殊字符串@daily、@weekly等是什么意思？

这些是非标准的简写形式：@reboot（启动时）、@daily（每天0点）、@weekly（每周日0点）、@monthly（每月1日0点）、@yearly（每年1月1日0点）、@hourly（每小时整点）。本工具不支持这些简写，请使用标准5字段格式。

Cron表达式中斜线/是什么意思？

斜线(/)表示步长。例如 */5 在分钟位置表示“每5分钟”，在小时位置 */2 表示“每2小时”。逗号(,)用于列出多个值，短横(-)表示范围。