About this tool
Cron Expression Parser is a free online tool that translates crontab schedules into plain English and shows the next runs. It supports standard 5-field syntax plus special values like @daily, @hourly, L, W, and #. Everything runs locally in your browser.
How it works
1
Enter a cron expression
Type or paste a 5-field cron schedule, or pick a preset. Each field represents minute, hour, day of month, month, and day of week.
2
Read the explanation
The tool translates your schedule into plain English in real time. Errors are highlighted with field-specific hints.
3
See the next runs
Below the explanation you get the next 5 run times, so you can verify the schedule matches your intent.
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Frequently Asked Questions
What is a cron expression? v
A cron expression is a string of five fields separated by spaces: minute, hour, day of month, month, and day of week. It tells the system when to run a scheduled task.
What special values are supported? v
We support @daily, @hourly, @weekly, @monthly, @yearly shortcuts, plus L (last day of month), W (nearest weekday), and # (nth weekday of month).
How do I read the next runs? v
After you type a valid expression, the tool shows the next 5 run times in your local time zone. This helps you catch mistakes before deploying.
Is my data sent to a server? v
No. Everything is parsed locally in your browser. No cron expressions or any other data leave your device.