Category: Developer tools
Cron Expression Parser
Explain a cron schedule and preview its next run times
Paste a five-field cron expression to see what each field means and preview its next five run times, computed locally from your device clock.
Thu Aug 20 2026 12:45:00 GMT-0700 (Pacific Daylight Time) Thu Aug 20 2026 13:00:00 GMT-0700 (Pacific Daylight Time) Thu Aug 20 2026 13:15:00 GMT-0700 (Pacific Daylight Time) Thu Aug 20 2026 13:30:00 GMT-0700 (Pacific Daylight Time) Thu Aug 20 2026 13:45:00 GMT-0700 (Pacific Daylight Time)
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What this tool does
A cron expression packs a recurring schedule into five fields — minute, hour, day of month, month and day of week — plus shorthand like @daily or @hourly. Reading one at a glance is hard, so this tool breaks each field down and walks your device clock forward to show exactly when it will next fire, which is the fastest way to catch an off-by-one mistake before it reaches a scheduler.
How to use it
- Paste a five-field cron expression, or load the example.
- Review what each of the five fields matched.
- Check the next five run times, calculated in your local time zone.
Privacy
This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.
Frequently asked questions
- Which cron format does this expect?
- The standard five-field Unix cron format: minute, hour, day of month, month and day of week. It also understands @yearly, @monthly, @weekly, @daily and @hourly shorthand.
- What time zone are the next run times in?
- Your device's local time zone, the same one your operating system clock uses.
- What happens if both day fields are set?
- Standard cron behaviour applies: when day of month and day of week are both restricted, a match on either one is enough to trigger the job.