Developer Tool
Cron Expression Converter
Convert between cron expressions and natural language. Preview schedules with timezone support.
Schedule Converter
Convert Cron Expressions to Plain English
Transform complex cron expressions into readable schedules and vice versa. Preview upcoming runs with timezone support and validate your scheduling logic.
Conversion Mode
Choose your conversion direction
🔧
5 fields, no seconds
⚙️
Cron Expression Input
Enter a cron expression (e.g., "0 9 * * 1-5" for weekdays at 9 AM)
5 fields
Natural Language
Converted result
Converted result will appear here...
Cron Examples
Common schedules people search for (copy-ready).
Standard Cron (5 fields)
*/5 * * * *
Every 5 minutes
*/10 * * * *
Every 10 minutes
0 * * * *
Every hour at minute 0
0 0 * * *
At midnight every day
0 2 * * *
Daily at 02:00
30 9 * * 1-5
Weekdays at 09:30
0 0 1 * *
On the 1st of each month
*/15 8-18 * * 1-5
Every 15 minutes 08:00–18:59 on weekdays
Quartz Cron (6 fields)
0 */5 * * * ?
Every 5 minutes
0 0 * * * ?
Every hour at minute 0
0 0 0 * * ?
At midnight every day
0 0 2 ? * MON-FRI
Weekdays at 02:00
0 59 23 L * ?
Last day of month at 23:59
0 0 9 ? * MON#1
First Monday of each month at 09:00
Cron Cheatsheet
Standard (5 fields)
- minute hour day-of-month month day-of-week
- Minutes: 0–59, Hours: 0–23
- Day-of-month: 1–31, Month: 1–12 or JAN–DEC
- Day-of-week: 0–6 (Sun–Sat) or SUN–SAT
- Operators: * any, , list, - range, / step
Quartz (6 fields)
- second minute hour day-of-month month day-of-week
- Seconds: 0–59, Minutes: 0–59, Hours: 0–23
- Special: ? no specific value (use in DOM or DOW)
- Advanced: L last, W nearest weekday, # nth weekday
- Examples: '0 */5 * * * ?' (every 5 minutes), '0 0 0 * * ?' (midnight)
Changelog
v1.2.0Latest
Flexible Input Parsing
- • Support for multiple time formats ("1am", "1 am", "1:00am")
- • Order-independent parsing ("1am everyday" or "everyday at 1am")
- • Enhanced day patterns ("everyday", "daily", "weekends")
- • 24-hour format support ("13:30", "09:15")
- • Time ranges ("from 9am to 5pm")
- • Case-insensitive and flexible spacing
v1.1.0
UI Enhancements
- • Enhanced dropdown design with glass morphism effects
- • Improved visual consistency across all selectors
- • Better accessibility with focus indicators
- • Smooth transitions and hover effects
v1.0.0
Initial Release
- • Bidirectional cron ↔ natural language conversion
- • Standard and Quartz cron engine support
- • Timezone-aware schedule previews
- • Next 10 runs preview with calendar view
- • Cron expression validation and warnings
- • Common scheduling patterns library
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Quick Tips
- All processing happens in your browser
- Your data never leaves your device
- No registration or login required
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