Cron Expression Explainer
Validate a standard five-field cron expression, show its fields, and calculate up to five upcoming runs in the browser time zone.
How to use
- Enter a cron such as 0 9 * * 1-5 and run Explain and calculate next runs.
Capabilities and scope
Minute, hour, day, month, and weekday support *, comma lists, hyphen ranges, and slash steps; the search advances minute-by-minute for up to one year.
How it works
Each field must match at least one value in its legal range, then future minutes are scanned until five matches are found.
Example
0 9 * * 1-5 produces upcoming local-browser times at 09:00 on weekdays.
Useful for
- Visually check a simple cron schedule and its near-term run times
Before you use it
- Quartz 6/7-field syntax, named months/weekdays, ?, L, W, #, and other extensions are unsupported.
Frequently asked questions
Which time zone is used?
The current browser's local time zone is used.