Cron Expression Explainer

Decode crontab lines for CI, Kubernetes CronJobs and servers: plain-English meaning plus next fire times in your timezone. Presets for common schedules.

Cron expression explainer for DevOps & IT

SREs, platform engineers and corporate IT paste crontab lines constantly: “what does 0 */6 * * * mean?” and “when does this fire next?” This explainer runs entirely in your browser—no upload of internal job names.

  • Plain-English description of 5-field cron (minute hour day-of-month month day-of-week).
  • Next run times in your local timezone.
  • Presets for common schedules (hourly, weekdays 09:00, every 15 minutes…).

Frequently asked questions

What cron format do you support?

Standard 5-field cron: minute hour day-of-month month day-of-week. Optional leading seconds field is accepted and ignored.

Are next runs in UTC?

They use your device local timezone—same as most interactive server clocks you care about when debugging.

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