Cron

Cron Explainer

Explain a cron expression with a field-by-field breakdown and a human-readable schedule in your browser.

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What does this tool do?

Explain a cron expression with a field-by-field breakdown and a human-readable schedule in your browser. Inputs: Cron expression. Outputs: Field breakdown, Human-readable schedule.

How to use it?

Enter a five-field expression or an explicit seconds-first six-field expression. Choose “Explain cron expression”, then copy individual result values. Clear restores the initial field defaults and removes results and messages.

Supported syntax: five-field Unix cron or the explicitly entered six-field seconds-first extension. Not a Quartz, Jenkins, AWS EventBridge or Kubernetes configuration converter. Parsing and calculation never execute jobs. Human descriptions use only the listed deterministic phrases. Next Run is bounded to eight years within 1970–2099 and uses the browser’s IANA data, skipping missing wall times and considering both repeated instants.