All guides
How to build a cron expression
Compose a 5-field cron schedule (minute, hour, day, month, weekday) and see it explained in English.
Builder vs explainer
Cron Builder helps you write an expression from fields. Cron Explainer does the reverse: paste an existing expression and read it in plain English.
Steps
1) Open Cron Builder. 2) Fill minute, hour, day of month, month, and day of week (* means every). 3) Click Run. Example: 0 9 * * 1-5 is 09:00 on weekdays. Use Cron Explainer if you already have a string from a crontab.