Utilities · 100% browser-side
Cron Expression Parser
Stop guessing what "*/15 9-17 * * 1-5" means.
Free foreverNo uploadsNo account
Cron expression (minute · hour · day of month · month · day of week)
Every 15 minutes, between 09:00 AM and 05:59 PM, Monday through Friday
*/15
Minute
9-17
Hour
*
Day of month
*
Month
1-5
Day of week
Suggested next steps
Keep working with these tools
Password GeneratorCreate unbreakable passwords tailored to your exact length and symbol requirements.QR Code GeneratorTurn any link, snippet, or contact into a scannable QR code — no signup, no watermark, no tracking redirects.Salary CalculatorSee what an hourly rate means per year, or a salary per hour, instantly.
Your privacy matters
All files are processed locally in your browser. Nothing is uploaded to our servers, so your documents remain private and secure.
01 · Real-world fits
Common use cases
- Double-checking a crontab entry before deploying it
- Understanding a cron schedule someone else wrote
- Writing a new schedule from the common presets and tweaking it
- Verifying day-of-week vs day-of-month behavior
- Confirming a job will fire when you expect, in local time
02 · The honest pitch
Why Cron Expression Parser?
The next-run preview is computed locally against your own clock and timezone, so what you see is what your machine will do. Ranges, steps, lists, and names (MON, JAN) are all supported, including the classic cron quirk where day-of-month and day-of-week act as OR when both are set.
Cron Expression Parser keeps the job narrow: stop guessing what "*/15 9-17 * * 1-5" means. It is built for the small but frequent moments when opening a heavyweight editor, installing a package, or uploading sensitive work to a random service is more friction than the task deserves.
03 · Edge cases
Frequently asked questions
Continue your workflow