AI Cron Expression Generator

Q: How do I generate a cron expression online?

Use the visual cron builder to select when you want your job to run — minute, hour, day, month, and weekday. The tool generates the correct cron expression and shows a human-readable description of when it will execute next.

Q: What does a cron expression look like?

A standard cron expression has five fields: minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-7). For example, '0 9 * * 1' means every Monday at 9:00 AM. The asterisk (*) means 'every' value.

Q: How do I run a cron job every 5 minutes?

Use the expression */5 * * * * to run a job every 5 minutes. The */n syntax means 'every n units'. For every 10 minutes use */10 * * * *, and for every 15 minutes use */15 * * * *.

Q: What is the difference between cron and crontab?

Cron is the Unix daemon that runs scheduled tasks. Crontab (cron table) is the configuration file that stores cron expressions and the commands to run. You edit your crontab with the 'crontab -e' command on Linux and macOS systems.

Q: How do I schedule a cron job to run at midnight daily?

Use the expression 0 0 * * * to run a job every day at midnight (00:00). For a specific time like 2:30 AM daily, use 30 2 * * *. The tool's visual builder makes it easy to set any time without memorizing syntax.

Cron Expression Quick Reference

Field	Values	Special Characters
Minute	0-59	`* , - /`
Hour	0-23	`* , - /`
Day of Month	1-31	`* , - / ? L W`
Month	1-12 or JAN-DEC	`* , - /`
Day of Week	0-7 or SUN-SAT (0 & 7 = Sun)	`* , - / ? L #`

Why Use an AI Cron Generator?

Cron expressions are deceptively tricky. The difference between 0 9 * * 1-5 and * 9 * * 1-5 is the difference between running once at 9 AM on weekdays and running every minute of the 9 AM hour on weekdays. One wrong character can cause jobs to run thousands of times more than intended.

Plain English → Perfect Cron

Just describe when you want your job to run. "Every weekday at 9 AM", "Every 15 minutes", "First Monday of the month at midnight" — our AI handles the translation and shows you exactly what each field means.

Multiple Formats

Need a cron for your Linux crontab? AWS CloudWatch? Spring Boot's @Scheduled annotation? Quartz scheduler? We support all major formats and note platform-specific quirks.

See the Next Runs

Don't guess — see the next 5 execution times to verify the expression does what you expect. Catches edge cases before they hit production.

Completely Free

No signup, no API key. 10 free generations per day. Each generation includes the expression, field breakdown, explanation, next runs, and platform tips.

Frequently Asked Questions

How do I generate a cron expression online?

Use the visual builder to select your schedule — minute, hour, day, month, weekday. The tool instantly generates the correct cron expression and shows a plain-English description of when it will next run.

What does a cron expression look like?

A standard cron expression has five fields: minute, hour, day of month, month, and day of week. Example: 0 9 * * 1 runs every Monday at 9 AM. The asterisk (*) means "every" for that field.

How do I run a cron job every 5 minutes?

Use */5 * * * *. The */n syntax means "every n units". For every 10 minutes use */10 * * * *, and for every hour use 0 * * * *.

What is the difference between cron and crontab?

Cron is the Unix daemon that executes scheduled tasks. Crontab is the file that stores your cron expressions and commands. Edit it with crontab -e on Linux or macOS.

How do I schedule a cron job to run at midnight daily?

Use 0 0 * * * for midnight every day. For 2:30 AM daily, use 30 2 * * *. The visual builder lets you set any time without memorizing the syntax.

📖 Explanation

🗓️ Next 5 Run Times

💡 Tips & Caveats

🔍 Need to write regex patterns too?