Cron expression parser

How to use this tool

Read five-field cron expressions in plain English.

Paste or enter your content. The result updates as you type. Choose an option only when you need to change the default.

Only standard five-field cron is supported. This tool describes the schedule, but does not calculate future execution times or select a scheduler timezone.

Example input

*/15 9-17 * * 1-5

Local processing

Your input stays in this browser. Drafts are kept in page memory while switching tools, and disappear on reload.

Text is limited to 1 million characters. Regex runs in a worker, capped at 200,000 characters, 1,000 matches and 1.5 seconds. Inputs above 100,000 characters use manual refresh.

The first page load and on-demand modules require network access. A complete offline cache is not included.