Cron Expression Helper
Explain cron expressions and next runs.
Enter a standard 5-field cron expression (minute, hour, day-of-month, month, day-of-week) to see a plain explanation and the next few run times. Everything runs locally in your browser.
Standard 5-field cron: minute, hour, day-of-month, month, day-of-week. Macros (@daily) and special characters (L, W, #) are not supported.
Your input is processed locally in your browser — nothing is uploaded, stored or logged.
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How it works
- 1 Type a cron expression, or pick an example.
- 2 Read the field-by-field explanation.
- 3 Check the next run times.
Common use cases
- Understand an unfamiliar cron line.
- Verify a schedule before deploying.
- Learn cron syntax.
- Preview when a job will run next.
Frequently asked questions
Is my input sent to a server?
No. Everything runs locally in your browser — your input is never uploaded, stored or logged.
What syntax is supported?
Standard 5-field cron with *, ranges (1-5), lists (1,3,5) and steps (*/5). Macros like @daily and special characters (L, W, #) are not supported in this first version.
Which time zone are run times in?
Your local browser time zone.
Is it really free?
Yes — free, with no signup and no limits.