Time & Automation

Cron Expression Parser

Explain standard five-field cron expressions in plain English and validate common ranges locally.

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The expression is parsed locally. Always verify which cron dialect and timezone your platform uses.

About this tool

What Cron Parser does

A standard cron expression defines minute, hour, day of month, month, and day of week. This parser explains common wildcards, steps, ranges, and lists.

Common uses

  • Review a scheduled job
  • Catch out-of-range fields
  • Explain a CI or Kubernetes CronJob schedule

Privacy and limitations

The expression is parsed locally. Always verify which cron dialect and timezone your platform uses.

Always validate security-sensitive output in the authoritative application or platform.

Frequently asked questions

Does this support seconds?

The first version targets classic five-field cron. Quartz and some schedulers add a seconds field.

Which timezone is used?

Cron uses the scheduler's configured timezone, not necessarily your browser timezone.