Cron Expression Parser
Parse and validate cron expressions. Visualize field breakdown and preview the next 10 scheduled run times.
Next 10 Runs
What is a Cron Expression?
A cron expression is a string of five fields (minute, hour, day of month, month, day of week) that defines a recurring schedule for automated tasks. Originating from Unix cron daemon, this syntax is now used everywhere โ CI/CD pipelines (GitHub Actions, GitLab CI), cloud schedulers (AWS CloudWatch, Google Cloud Scheduler), task queues (Celery, Sidekiq), container orchestration (Kubernetes CronJobs), and system administration. For example, "0 9 * * 1-5" means "every weekday at 9:00 AM".
How to Use This Cron Tool
Enter a cron expression (e.g., */5 * * * *) or select from common presets like "every hour" or "every Monday".
See a human-readable description and field-by-field breakdown showing what each part of the expression means.
Preview the next 10 scheduled execution times to verify the schedule works as expected before deploying.