Cron Expression Parser
Understand what a cron expression schedules without waiting for the job to run. The parser explains each field, supports common ranges, lists, steps, names, and macros, and previews the next run times in your local timezone.
How to use this tool
- Enter a five-field or six-field cron expression, or choose a preset.
- Read the plain-language description and field breakdown to verify the schedule.
- Check the upcoming run times and copy the expression for your scheduler.
Tips
- Confirm whether your scheduler expects five fields or a leading seconds field; cron dialects are not identical.
- Check the machine timezone and daylight-saving behavior before relying on a schedule for production work.
Frequently asked questions
What cron formats does this parser support?
It supports five-field and six-field expressions, ranges, lists, slash steps, month and weekday names, and common @ macros.
Why do the next run times use my local timezone?
The preview uses the browser's timezone so the result is immediately useful for your environment. Your scheduler may run in a different timezone.