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Cron Expression Parser & Schedule Generator
Translate cryptic cron expressions into human-readable schedules, see upcoming execution timestamps, and build cron strings with zero guesswork.
Cron Expression Parser
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Understanding Cron Syntax
Cron is the industry standard for scheduling recurring background tasks in Linux, AWS EventBridge, Kubernetes cronjobs, and GitHub Actions. A standard cron expression consists of 5 or 6 fields separated by spaces:
| Field | Allowed Values | Special Characters |
|---|---|---|
| Minute | 0 – 59 | * , - / |
| Hour | 0 – 23 | * , - / |
| Day of Month | 1 – 31 | * , - / ? L W |
| Month | 1 – 12 (or JAN – DEC) | * , - / |
| Day of Week | 0 – 6 (0 = Sunday) | * , - / ? L # |
Frequently Asked Questions
What does */15 * * * * mean?
This expression runs the scheduled job every 15 minutes, every hour, every day.
What does 0 0 * * * mean?
This expression runs every day at midnight (00:00).
How do I run a job every weekday at 9 AM?
The standard expression is '0 9 * * 1-5' (minute 0, hour 9, every day of month, every month, Monday through Friday).