Cron Expression Parser
Cron Expression Parser
Parse a 5-field cron expression and preview the next run times instantly.
Processed locally in your browser. We do not store or upload your data.
InputsCron parse10 runsCustom start
Result
Ready to parse cron expression.
Supported format: minute hour day-of-month month day-of-week.
Flow
- Parse each cron field and validate ranges.
- Translate value sets into readable text summary.
- Compute next run dates from given start timestamp.
Example
Worked example: parse business schedule
- 1 Input expression 0 9 * * 1-5.
- 2 Parser explains it as weekday 09:00 schedule.
- 3 Next run list confirms upcoming execution dates.
You can quickly validate schedule meaning and near-term run times.
How
- Paste 5-field cron expression in the input.
- Choose run count and optional start datetime.
- Read schedule explanation and next run preview list.
Cases
- Audit inherited cron jobs from legacy systems.
- Review pull requests that modify scheduler expressions.
- Verify execution windows before deploying automation.
Avoid
- Supplying six-field Quartz expressions to a five-field parser.
- Ignoring start timestamp when comparing expected next runs.
- Assuming day-of-month and day-of-week logic is always strict AND.
FAQ
Does parser support month and weekday names?
Yes, common month and weekday aliases are supported.
Can I preview the next 10 runs?
Yes, run count is configurable and defaults to 10.
Is parsing done locally?
Yes, parsing and preview calculations run in your browser.
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