Cron Expression Generator – Visual Cron Builder Free
Visually construct intricate backend cron job expressions utilizing interactive field mapping. Seamlessly read plain-English parameter translation blocks.
Generated Expression
* 0 * * *📅 Human translation: Runs every minute at 0am, every day, every month, every day of week.
Minute
Hour
Day of Month
Month
Day of Week
Common Schedules
Next 5 executions
Cron Syntax Reference
Minute
0–59
Hour
0–23
Day
1–31
Month
1–12
Weekday
0–6
*Any/every*/nEvery n (e.g. */5)nSpecific value (e.g. 9)n-mRange (e.g. 1-5)n,mList (e.g. 1,3,5)0 9 * * 1-5Weekdays at 9amHow to Use the Cron Expression Generator
Use Visual Builder
Pick values for each field (Minute, Hour, Day, Month, Weekday) using the selector buttons, or use the number input.
Or Paste an Expression
Switch to 'Manual Input' to paste an existing cron expression and instantly decode it into a human explanation.
Copy & Schedule
Copy the expression and use it in crontab, GitHub Actions, Kubernetes CronJobs, or any cron-compatible scheduler.
Frequently Asked Questions
What is a cron expression?
A cron expression is a string of 5 fields that define the schedule for a recurring task. It is used in Unix/Linux servers, serverless functions, and CI/CD pipelines.
Cron runs at the wrong time — why?
Cron schedules use the system/server timezone. Make sure your server timezone matches the timezone you're planning around, or explicitly set the CRON_TZ environment variable.
Can I schedule every 30 seconds with cron?
Standard cron has a minimum granularity of 1 minute. For sub-minute scheduling, use tools like systemd timers, Kubernetes Jobs, or application-level scheduling libraries.
What is '0 0 * * 0' and when does it run?
It runs at midnight (00:00) on Sunday (day 0). It's a common weekly cleanup or backup schedule.
Does this tool work with GitHub Actions?
Yes! GitHub Actions uses the standard 5-field cron syntax. Paste the expression directly into the 'schedule' field of your workflow YAML.
Embed / Link
https://tools.devriq.in/cron-generator/