Terms of Use
Last updated: May 2026
Use of this site
crontools.dev is a free reference and tooling site for cron expressions. You may use it for personal and commercial purposes — building, validating, and shipping schedules in your own software is exactly what it's for.
No warranty
Cron parsing, validation, and next-run previews are provided "as is." I do my best to match each platform's documented behavior, but scheduler implementations have edge cases (timezone handling, DST transitions, leap years, platform-specific extensions) that may produce results differing from a real production scheduler. Always verify critical schedules in your actual environment before relying on them.
Limitation of liability
crontools.dev is not liable for missed runs, double-runs, incorrect schedules, or any downstream consequences of using expressions copied from this site. If a job fires at the wrong time and costs you money, that's on the scheduler and the deployment — not on a reference tool.
Content and trademarks
Platform names (AWS EventBridge, Kubernetes, Quartz, GitHub Actions, Azure Functions, Spring, Google Cloud Scheduler, Jenkins, Apache Airflow) are trademarks of their respective owners. This site is not affiliated with or endorsed by any of them — it's an independent reference tool.
Changes
These terms may change as the site evolves. The "last updated" date at the top will reflect the most recent change.