Free Online Cron Expression Parser and Describer
Parse and describe cron expressions in plain English with HubKit's cron tool. Enter a cron schedule expression and see a human-readable explanation of when the job will run. Supports standard 5-field cron syntax used by Linux crontab, Kubernetes, GitHub Actions, and most scheduling systems.
How to Use
Enter a cron expression (5 fields: minute, hour, day of month, month, day of week). The tool instantly shows a human-readable description and the next scheduled run times. Use the reference to look up field syntax.
Features
- Parse standard 5-field cron expressions
- Plain English description of the schedule
- Show next scheduled execution times
- Quick reference for cron field syntax
Frequently Asked Questions
What is a cron expression?
A cron expression is a string of 5 fields (minute, hour, day of month, month, day of week) that defines a recurring schedule. For example, "0 9 * * 1-5" means "at 9:00 AM every weekday."
What does an asterisk (*) mean in cron?
An asterisk means "every" or "any value." For example, * in the hour field means every hour. You can also use ranges (1-5), lists (1,3,5), and steps (*/5 for every 5th).
Does this tool support 6-field cron with seconds?
This tool supports the standard 5-field cron format used by crontab, Kubernetes, and most scheduling systems. Some systems like Quartz use a 6th field for seconds.