Cron Expression Parser
Validate a 5-field cron expression and see its next run times in your local time zone. Supports *, ranges, steps and lists — a handy reference for developers and sysadmins.
Common cron expressions
| Expression | Description |
|---|
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Parse a cron expression
Enter a 5-field cron expression to validate it, read it in plain English, see a field-by-field breakdown and the next scheduled run times in your local time zone. Supports *, ranges, steps and lists — or build one with the dropdowns.
FAQ
What format does it expect?
Standard 5-field cron: minute, hour, day-of-month, month, day-of-week. It supports *, ranges (1-5), steps (*/15) and lists (1,15,30).
Does it explain the expression in plain English?
Yes. It generates a deterministic plain-English description and a field-by-field breakdown, plus the next run times — so you can see exactly what it does.
Can I build a cron without memorising the syntax?
Yes. Use the dropdown builder (minute / hour / day) — it composes a valid expression for you. It uses fixed choices, not fuzzy text guessing, so the result is always correct.
What timezone are the next runs in?
Your local time zone, based on your device clock.
Is anything sent to a server?
No. Parsing and the next-run calculation happen entirely in your browser.
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