Cron Expression Generator

What is a Cron Expression?

A cron expression is a five-field string that schedules recurring jobs in Unix-like systems and job runners (GitHub Actions, GitLab CI, Kubernetes CronJob, AWS EventBridge). Each field — minute, hour, day-of-month, month, day-of-week — accepts a literal, a list (1,3,5), a range (9-17), a step (*/15), or a wildcard (*).

What this tool does

• Visual builder — edit each field and the expression updates.
• Decoder — paste a cron and read a plain-English description.
• Next run times — see the next five executions in UTC so you can sanity-check your schedule.
• Common presets — start from "every 15 minutes", "weekdays at 9am", "monthly on the first", and similar.

Field quick reference

• Minute: 0-59
• Hour: 0-23
• Day of month: 1-31
• Month: 1-12 (or JAN-DEC)
• Day of week: 0-6 (Sunday = 0; also SUN-SAT)

All parsing happens in your browser — nothing is sent to a server.