Cron parser
Parse cron expressions, show next execution times and explain in human-readable form.
Exactly five fields separated by spaces: minute, hour, day, month, weekday. Example: */5 * * * * means every 5 minutes.
Description
Every 5 minutes
Next 10 executions
- 1. Sat, 17/10/2026, 04:25 CEST
- 2. Sat, 17/10/2026, 04:30 CEST
- 3. Sat, 17/10/2026, 04:35 CEST
- 4. Sat, 17/10/2026, 04:40 CEST
- 5. Sat, 17/10/2026, 04:45 CEST
- 6. Sat, 17/10/2026, 04:50 CEST
- 7. Sat, 17/10/2026, 04:55 CEST
- 8. Sat, 17/10/2026, 05:00 CEST
- 9. Sat, 17/10/2026, 05:05 CEST
- 10. Sat, 17/10/2026, 05:10 CEST
Syntax reference
| Field | Range | Special chars |
|---|---|---|
| Minute | 0-59 | * , - / |
| Hour | 0-23 | * , - / |
| Day | 1-31 | * , - / |
| Month | 1-12 | * , - / |
| Weekday | 0-7 (0=7=So) | * , - / |
How this tool works
The cron parser analyses standard cron expressions (5 fields), computes the next 10 execution times and provides a human-readable description. Ideal for debugging crontabs, CI/CD schedules or monitoring intervals — fully in your browser, no dependency on external services.
Typical use cases
- Validate crontab entries before deployment
- Visually inspect CI/CD pipeline schedules
- Plan monitoring intervals and see next executions
- Explain to clients when a backup job will run
Frequently asked questions
Which cron format is supported?
Standard 5-field format: minute (0-59), hour (0-23), day (1-31), month (1-12), weekday (0-7). No extended formats like @daily or seconds field.
What does */5 mean in the minute field?
"Every 5 minutes" — i.e. 0, 5, 10, 15, ... The slash defines the interval within the allowed range.
Is Sunday 0 or 7?
Both are allowed. 0 = Sunday, 7 = Sunday (alias). Monday is 1, Saturday is 6.
What applies if both day and weekday are set?
Then either one is enough: 0 0 1 * 1 runs on the 1st of every month and additionally every Monday. If one of the two fields starts with *, such as */2, both must match. This is how cron behaves on Linux (cronie), and the preview calculates the same way.
In which timezone are next executions calculated?
In your local browser timezone. Cron servers typically use the server timezone — verify before deployment. Around daylight saving changes the preview calculates like cron: fixed-time runs that fall into the skipped hour take place right after it; in the repeated hour they run only once.
Are my expressions stored?
No. Entirely local in your browser, no network request.
Can I parse complex expressions like 0 9-17 * * 1-5?
Yes — ranges (1-5), lists (1,3,5), steps (*/2) and combinations are supported.
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