Cron Expression Generator
Create cron expressions visually. See human-readable descriptions and next run times.
Quick Presets
Build Cron Expression
* = every minute
* = every hour
* = every day
* = every month
0 = Sunday
Cron Expression
* * * * *
Runs every minute
Cron Syntax Help
| Field | Values | Special Characters |
|---|---|---|
| Minute | 0-59 | * , - / |
| Hour | 0-23 | * , - / |
| Day of Month | 1-31 | * , - / ? |
| Month | 1-12 | * , - / |
| Day of Week | 0-6 (0=Sun) | * , - / ? |
Examples:
*/5 * * * *- Every 5 minutes0 */2 * * *- Every 2 hours0 9-17 * * 1-5- Every hour from 9 AM to 5 PM, Monday to Friday0 0 1,15 * *- At midnight on the 1st and 15th of every month
Features
- 🎯 Visual cron expression builder
- 📝 Human-readable descriptions
- ⏰ Next 5 run times preview
- ⚡ Quick presets for common schedules
- 📋 One-click copy
- 📚 Syntax help and examples
- 🔒 All processing done locally
- 🌙 Dark mode support
How to Use
- Choose Preset - Click a preset for common schedules
- Or Build Custom - Enter values in each field
- Preview - See description and next run times
- Copy - Click copy button to use in your crontab
About Cron Expressions
Cron is a time-based job scheduler in Unix-like operating systems. Cron expressions define when jobs should run.
Common Use Cases
- Schedule automated backups
- Run maintenance scripts
- Send scheduled emails
- Clean up temporary files
- Generate reports