Paste a cron expression and this tells you whether it's valid and, in plain English, when it actually runs. It checks each field's range and syntax entirely in your browser.
Cron Expression Parser is a quick, no-nonsense developer utility that runs entirely client-side, so your code and data never leave your machine.
That there are five fields and that each value is within range and uses valid syntax.
It parses the standard five-field format; named shortcuts are not covered.
No — parsing happens in your browser.
Five fields: minute, hour, day-of-month, month, day-of-week.
Valid cron expression