Cron Expression Explainer & Generator
Decode, generate, and validate cron expressions instantly. See next run times in your timezone — all processing happens locally.
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Frequently Asked Questions
A cron expression is a string of 5 or 6 fields separated by spaces that defines a schedule. Each field represents a time unit: minute, hour, day of month, month, and day of week.
Use the cron expression */5 * * * *. The */5 in the minute field means 'every 5 minutes'.
The asterisk means 'every possible value' for that field. For example, * in the hour field means 'every hour'. Combined with other fields, it builds flexible schedules.
Yes. Paste any cron expression and the tool instantly shows the next 5 scheduled run times in your local timezone, so you can verify your schedule before deploying.
Standard cron uses 5 fields (minute through day-of-week). The optional 6th field adds seconds precision, used by tools like Spring Scheduler and Quartz.
No. All parsing, validation, and next-run calculations happen entirely in your browser. Your cron expressions never leave your device.