Validate and Explain

Field Order

Field	Range
Minute	0-59
Hour	0-23
Day of Month	1-31
Month	1-12
Day of Week	0-6 (Sun-Sat)

About This Cron Tool

This tool validates standard 5-field cron syntax: minute, hour, day of month, month, and day of week. It supports wildcards, lists, ranges, and step values, and explains each field in plain language.

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Tool FAQ

Is this tool private?

Yes. The calculations run locally in your browser, and no inputs are sent to a server. If you refresh the page, your values are cleared.

How accurate are the results?

Results are based on the standard formulas shown on the page. If you need certified or audited calculations (for medical, legal, or financial decisions), consult a professional source.

How should I use this tool?

Enter your values, click the calculate button, and review the result. Use the notes or reference tables to interpret the output and double-check units.

Can I share or bookmark the result?

You can bookmark the page for repeat use. For sharing results, copy the output text or take a screenshot.