A cron expression is a string of five space-separated fields that define a schedule for automated tasks on Unix-like operating systems, Kubernetes CronJobs, AWS EventBridge, GitHub Actions schedules, and many other scheduling systems. Each field represents a unit of time: minute, hour, day, month, and weekday.
This cron expression builder lets you visually construct, validate, and understand cron schedules. It shows the next upcoming execution times calculated in real-time, making it easy to verify your schedule before deploying it to production systems like crontab, Hangfire, Quartz.NET, or Node-Cron.