Quick — what's the cron expression for "every weekday at 9:30 AM"? If you had to think about it for more than 2 seconds, you need this tool.
Cron expressions look simple: five fields, a few special characters. But the number of developers who've accidentally set up a job to run every minute instead of once a day is embarrassingly high. The difference between 0 9 * * * and * 9 * * * is 1 email vs. 60 emails per hour.
Our AI Cron Generator eliminates the guesswork. Describe your schedule in plain English, get the exact cron expression with a field-by-field breakdown and the next 5 run times.
How It Works
- Describe your schedule — "Every weekday at 9:30 AM"
- Choose your format — Unix (5 fields), Quartz (6 fields), or AWS
- Get results — cron expression, field breakdown, next 5 runs, tips
- Copy and use — one click to copy the expression
The Cron Cheat Sheet You'll Never Need Again
| You say... | You get... |
|---|---|
| "Every day at midnight" | 0 0 * * * |
| "Every 15 minutes" | */15 * * * * |
| "Every weekday at 9 AM" | 0 9 * * 1-5 |
| "First Monday of every month" | 0 0 1-7 * 1 |
| "Every Sunday at 2:30 AM" | 30 2 * * 0 |
| "Every 6 hours" | 0 */6 * * * |
Why Field Breakdown Matters
Every generated cron expression comes with a visual breakdown of what each field means. For 30 9 * * 1-5:
- 30 — Minute: at minute 30
- 9 — Hour: at 9 AM
- * — Day of month: every day
- * — Month: every month
- 1-5 — Day of week: Monday through Friday
No more guessing which field is which.
Supports Multiple Formats
- Unix/Linux — Standard 5-field format for crontab, GitHub Actions, most CI/CD
- Quartz — 6-field format with seconds for Spring Boot, Java schedulers
- AWS — 6-field format for CloudWatch Events, EventBridge, Lambda
⏱️ Try the AI Cron Generator
Free. No signup. Describe your schedule → get the cron expression → see next run times.
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