Cron Generator Cron · omikuji tools
Local only Runs in your browser

✨ Features

  • Build cron expressions visually — set minute, hour, day, month, and weekday fields with ease
  • See next run times in real time to verify your cron expression instantly
  • Auto-generate snippets for GitHub Actions, Kubernetes, Docker, AWS EventBridge, and crontab
  • URL sharing for team collaboration; fully local processing, no data sent

🪄 Perfect for

Scheduled batch jobs

Quickly create cron expressions for daily, hourly, or weekly scripts and batch tasks.

CI/CD pipelines

Set up scheduled triggers for GitHub Actions workflows or Kubernetes CronJobs instantly.

Parsing existing cron expressions

Paste a cryptic cron expression and get a plain English explanation plus next run dates.

AWS EventBridge rules

Auto-generate snippets in AWS's unique cron format to configure EventBridge scheduling rules.

🔒 Privacy

This tool runs entirely in your browser, and your cron expressions and settings are never sent to a server. Data leaves your browser only when you use URL sharing to create a short link (the URL containing your cron expression is sent to share.omikuji.dev).

❓ FAQ

What is cron?

Cron is a Unix/Linux task scheduler. It uses a five-field expression (minute, hour, day, month, weekday) to define when a task should run.

What is the cron expression for every minute?

"* * * * *" runs every minute. Use the builder in this tool to set each field and the expression is generated automatically.

Does GitHub Actions cron use a different timezone?

Yes. GitHub Actions cron runs in UTC. If you are in a different timezone, remember to offset your times accordingly.

Why does AWS EventBridge cron look different?

AWS EventBridge uses a six-field format (minute, hour, day, month, weekday, year). This tool auto-generates the correct AWS snippet for you.

CRON
Valid
Presets
Schedule Builder Builder
Set fields to build the expression
Preview Preview
Next runs Next runs
    tools.omikuji.dev Standard 5-field cron · Next runs calculated in your local timezone
    CtrlK Ctrl+K focus expr C C copy expr