The Cron Intelligence Platform
The Complete
Cron Expression
Toolkit
Generate, parse, validate, explain, and understand cron expressions instantly. The most powerful free cron tool for developers.
Keyboard shortcuts: Alt+G Generator · Alt+P Parser · Alt+E Explainer
Tools
Everything you need for cron
Six specialized tools, all free, all instant. No signup, no rate limits, no data sent anywhere.
Cron Generator
Build cron expressions visually with presets, a field builder, and instant output for any platform.
Use Generator →
Cron Parser
Deep field-by-field breakdown with next run times, heatmap, and platform interpretation.
Use Parser →
Cron Validator
Validate expressions against Linux, AWS EventBridge, Kubernetes, and Quartz. Get fix suggestions.
Validate Now →
Cron Explainer
Plain English explanations for any cron expression. Perfect for beginners and code reviews.
Explain Now →
Human Readable
Google Translate for cron. Paste any expression and get an instant, clear, natural translation.
Translate →
Cron Examples
Categorized library of ready-to-use cron expressions — hourly, daily, weekly, monthly, and more.
Browse Examples →
Platform Support
Works with every platform
CronWave understands the syntax differences between every major cron implementation.
Linux / Unix
Standard 5-field crontab syntax
AWS EventBridge
6-field with year, 1-indexed DOW
Kubernetes
CronJob spec.schedule field
GitHub Actions
schedule.cron in workflow YAML
Vercel
Cron jobs in vercel.json
Quartz Scheduler
7-field Java cron format
Why CronWave
Built for real developers
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Human-readable explanationsEvery cron expression translated into plain English, instantly.
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Next run previewsSee the next 5, 10, or 20 execution times for any expression.
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Weekly activity heatmapVisual 7-day × 24-hour heatmap showing when your job runs.
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Multi-platform validationCatch errors specific to Linux, AWS, K8s, and Quartz syntax.
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100% privateEverything runs locally in your browser. Zero data sent anywhere.
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Keyboard-first UXBuilt for power users who don't want to leave the keyboard.
Field Reference
Cron expression syntax
A standard cron expression has five space-separated fields. Each field accepts numbers, ranges, steps, and lists.
FAQ