Cron Expression Generator & Translator
Build, test, and understand cron schedules with real-time plain English translations, field builders, presets, and upcoming execution run previews.
Presets:
Cron Schedule Fields (5-Field Standard)
crontab / k8sCron Expression Output:
0 9 * * 1-55 fields
Human Translation
Valid“At 09:00 AM, Monday through Friday”
Next 5 Scheduled Runs
Local Time- #111/2/2026, 9:00:00 AM
- #211/3/2026, 9:00:00 AM
- #311/4/2026, 9:00:00 AM
- #411/5/2026, 9:00:00 AM
- #511/6/2026, 9:00:00 AM
How to Use the Cron Expression Generator
- Choose a Preset or Enter Custom Fields: Click any common schedule (e.g. Every 5 Minutes, Hourly, Daily Midnight) or customize the 5 fields manually.
- Inspect the Plain English Translation: Watch the real-time description update instantly as you change minutes, hours, or weekdays.
- Verify Upcoming Execution Times: Review the next 5 scheduled trigger timestamps to ensure your job will fire exactly when intended without timezone surprises.
- Copy with 1-Click: Click Copy Cron to paste directly into your Linux
crontab -e, Kubernetes CronJob manifest, or GitHub Actions YAML file.
Understanding the 5 Cron Fields and Special Characters
| Field | Allowed Values | Special Characters |
|---|---|---|
| 1. Minute | 0 - 59 | * , - / |
| 2. Hour | 0 - 23 (24h format) | * , - / |
| 3. Day of Month | 1 - 31 | * , - / ? |
| 4. Month | 1 - 12 or JAN - DEC | * , - / |
| 5. Day of Week | 0 - 6 (0 is Sunday) or SUN - SAT | * , - / ? |
Common Cron Pitfalls and Cloud Quirks
- UTC Timezone Assumption: GitHub Actions, Kubernetes nodes, and AWS Lambda EventBridge triggers default to UTC. If you schedule a backup at
0 2 * * *, verify if that is 2 AM UTC or 2 AM in your local timezone using our Unix and epoch timestamp converter. - AWS EventBridge 6-Field Syntax: AWS requires a 6th field for Year (e.g.,
0 9 ? * MON-FRI *) and mandates a question mark (?) in either Day of Month or Day of Week. - Step Values: Writing
*/15 * * * *executes every 15 minutes. Writing15 * * * *only executes once per hour at minute 15.