Cron Expression Parser & Generator
Presets:
What Is a Cron Expression?
A cron expression is a string of five fields that specifies when a scheduled task (cron job) should run. It is used in Unix-like operating systems, CI/CD pipelines, cloud schedulers, and many other systems. This tool parses any cron expression into a human-readable description, shows the next 10 scheduled run times, and lets you build expressions visually using the Generator tab.
Cron Syntax Reference
A cron expression has five space-separated fields. Special characters: * (any), , (list), - (range), / (step).
| Field | Allowed Values | Special Chars |
|---|---|---|
| Minute | 0–59 | * , - / |
| Hour | 0–23 | * , - / |
| Day of Month | 1–31 | * , - / |
| Month | 1–12 | * , - / |
| Day of Week | 0–6 (Sun=0, Sat=6) | * , - / |
How to Use This Tool
- Paste a cron expression into the Parser input field, or click a preset.
- The tool instantly shows a plain-English description and the next 10 run times in your local timezone.
- Switch to the Generator tab to build a cron expression by choosing options for each field.
- Click "Copy" to copy the generated expression, or "Open in Parser" to see its schedule.