Cron Expression Parser
Turn a 5-field cron expression into a plain-English description and parse it field by field
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This tool turns a cron expression made of five fields (minute, hour, day, month, weekday) into a human-readable description and shows in a table which values each field matches. It's useful for developers and operators setting up cron jobs and schedulers who want to check an expression without confusion.
How to use
- Enter a cron expression with the five fields 'minute hour day month weekday' (e.g., 30 9 * * 1-5).
- The execution schedule the expression means is explained in a plain-English sentence.
- The actual values each field matches (minute/hour/day/month/weekday) are laid out in a table.
FAQ
- Does it support notation like */5, 1-5, and 1,3,5?
- Yes. It supports asterisk (*), ranges (1-5), lists (1,3,5), steps (*/5), and combinations of these, and it also recognizes English abbreviations like JAN and MON for months and weekdays.
- What are 0 and 7 in the weekday field?
- 0 is Sunday and 6 is Saturday, and 7 is also treated as Sunday. If you specify both day-of-month and weekday, it runs when either one matches.
- Is the expression I enter sent to a server?
- No. Parsing all happens in your browser, and the expression you enter is never sent to or stored on a server.