Cron Expression Explainer
Translate a cron expression into plain English so you know when it runs.
Translate a cron expression into plain English so you know exactly when a scheduled job runs. Paste a five-field expression (minute, hour, day-of-month, month, weekday) and get a readable description. A wrong cron line can run a job 60 times too often or never, so checking it first prevents expensive mistakes. It runs entirely in your browser.
Frequently asked questions
How do I read a cron expression?
The five fields are minute, hour, day-of-month, month and weekday. Paste your expression and the tool describes when it runs.
What does 0 9 * * 1-5 mean?
At 09:00, Monday through Friday. The tool spells this out for any expression you enter.
What do the special characters mean?
* is every, a comma is a list, a hyphen is a range, and a slash is a step (e.g. */15 = every 15 units).
Why check a cron expression?
A small mistake can run a job far too often or never; a plain-English check catches it before you deploy.