Cron Expression Builder & Parser
Validate a 5-field cron expression, get a plain-English description, and preview the next scheduled run times in your timezone.
⚡ Preset Library — click to load
Quick Reference — Field syntax
| Special Character | Meaning |
|---|---|
| * | Any / every value |
| */n | Every n-th value (step) |
| a-b | Range from a to b |
| a,b,c | List of values |
| a-b/n | Range with step |
| Field | Range | Names allowed |
|---|---|---|
| Minute | 0–59 | — |
| Hour | 0–23 | — |
| Day of Month | 1–31 | — |
| Month | 1–12 | JAN–DEC |
| Day of Week | 0–6 | SUN–SAT |
This tool was created by Ben Crittenden, a Project Management Professional (PMP) with experience in web development and systems administration.