How to use
- Paste a five-field cron expression.
- Click Run to see a plain-English explanation.
- Review each field's meaning and upcoming run slots.
Examples
- Verify a cron schedule before adding it to a server.
- Understand what '*/15 9-17 * * 1-5' means.
Cron Expression Tester
Explain standard five-field cron expressions and preview upcoming run slots.
- Runs in your browser
- No account
- Clear output
FAQ
Is Cron Expression Tester free to use?
Yes. The page is designed as a free, lightweight utility with non-intrusive ads instead of accounts or paywalls.
Does this tool upload my files or text?
No. The core work runs in your browser, so files and text do not need to leave your device. See the privacy page for broader site details.