KitVela

Cron Expression Generator & Schedule Translator

Generate and translate cron schedule expressions.

Generate and understand cron schedule expressions effortlessly. Use interactive inputs and common presets to craft clean 5-part crontab expressions for Linux, Kubernetes, GitHub Actions, and cloud tasks.
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* * * * *

Every minute.

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How It Works & Calculation Method

Cron is a time-based job scheduling system found across Unix-like operating systems, cloud task runners (AWS CloudWatch, Google Cloud Scheduler), and CI/CD pipelines. Crafting expressions manually often leads to unintended execution intervals.

Our interactive Cron Generator lets you configure minute, hour, day-of-month, month, and day-of-week parameters with instantaneous human-readable schedule translations.

Select your desired execution timing across five fields: minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-6).

The tool concatenates the expression into standard crontab format and outputs a clear natural language translation.

Mathematical Formula

Crontab Format: * * * * * (Minute Hour Day-of-Month Month Day-of-Week)

Worked Example: Nightly Database Backup at 2:30 AM

A DevOps engineer schedules an automated database snapshot every night at 2:30 AM.

•Minute = 30.
•Hour = 2 (2 AM in 24-hour time).
•Day of Month = * (every day).
•Month = * (every month).
•Day of Week = * (every day of the week).
•Resulting cron string = '30 2 * * *'.
Final Result: Cron: 30 2 * * * (At 02:30 AM, every day)

Common Pitfalls to Avoid

  • •Confusing day-of-week numbering (0 and 7 typically represent Sunday in Unix cron).
  • •Using step values incorrectly (e.g., */5 in minute field means 'every 5 minutes', not 'at minute 5').
  • •Forgetting server time zone settings when scheduling time-sensitive batch operations.

Who This Tool Is For

  • •DevOps engineers scheduling Kubernetes CronJobs and Linux system tasks.
  • •Backend developers configuring Celery, BullMQ, or node-cron batch intervals.
  • •Cloud architects setting up AWS Lambda and Cloud Scheduler triggers.

How to Use the Cron Generator

1

Select Timing

Enter timing parameters or click a preset button.

2

Review String

Examine the generated 5-part crontab expression.

3

Copy Expression

Copy the cron string directly into your crontab or cloud console.

Frequently Asked Questions

What do the 5 asterisks in a cron expression represent?
The five positions represent: (1) Minute [0-59], (2) Hour [0-23], (3) Day of the month [1-31], (4) Month [1-12], and (5) Day of the week [0-6].
What does '*/5 * * * *' mean in cron?
It means the scheduled task executes every 5 minutes, 24 hours a day, 7 days a week.
What does '0 0 * * *' mean?
It means the task executes once daily at midnight (00:00).
What day does 0 represent in cron day-of-week?
In standard Unix cron, 0 represents Sunday (some parsers also accept 7 as Sunday).
Does this generator support seconds?
This generator uses the universal standard 5-part POSIX crontab syntax; systems like Quartz use 6-part syntax including seconds.
How do I run a cron job only on weekdays?
Set the day-of-week field to '1-5' (Monday through Friday), for example '0 9 * * 1-5' for 9 AM weekdays.

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Last updated: 10/9/2026