'0 */6 * * 1-5' — can you read that? Cron expressions are compact but cryptic scheduling patterns used by Linux cron, Kubernetes CronJobs, GitHub Actions, and CI/CD pipelines. Once you understand the five fields, writing cron expressions becomes second nature.
What Is Cron Expression Parser?
A cron expression consists of five fields: minute, hour, day-of-month, month, and day-of-week. Each field accepts numbers, ranges, wildcards, and step values. Our Cron Expression Parser translates cron expressions to plain English and shows upcoming execution times.
How to Use Cron Expression Parser on DevToolHub
- Open the Cron Expression Parser tool on DevToolHub — no signup required.
- Paste or enter your input data in the left panel.
- See the result instantly in the output panel.
- Copy the result or download it as a file.
Common Scheduling Patterns
The most-used cron expressions explained:
// Every minute
* * * * *
// Every hour at minute 0
0 * * * *
// Daily at 3:30 AM
30 3 * * *
// Every Monday at 9 AM
0 9 * * 1
// Every 6 hours on weekdays
0 */6 * * 1-5
// First day of every month at midnight
0 0 1 * *
// Every 15 minutes during business hours
*/15 9-17 * * 1-5Pro Tips
- Remember the field order: minute, hour, day-of-month, month, day-of-week
- Use */N for step values: */15 = every 15 minutes, */6 = every 6 hours
- Day-of-week varies: 0 or 7 = Sunday in standard cron, but some systems differ
- Always test cron expressions before deploying — our parser shows the next 5 execution times
When You Need This
- Configuring scheduled tasks in Linux crontab
- Setting up Kubernetes CronJob schedules
- Scheduling GitHub Actions and CI/CD pipeline triggers
- Planning automated database backups and report generation
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