Updated: August 2026 • Verified v1.2
Cron Schedule Expression Tester & Execution Visualizer
Developer ToolsHigh UsageLocal Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.
Chronological recurrence matcher evaluating minute-level timestamp boundariesWas this calculation helpful?
Understanding Your Results
Parses minute, hour, day-of-month, month, and day-of-week fields, displays field definitions, and calculates the next 10 chronological run events.
Practical Guidance & Next Steps
Use standard 5-field crontab notation (* * * * *). Toggle between Local and UTC to ensure server cron tasks trigger at the desired local hour.
What is this?
A developer tool that parses crontab schedule expressions and computes the exact upcoming execution timeline.
How does it work?
1. Enter any 5-field cron expression (e.g. '0 9 * * 1-5') or select a preset.
2. Toggle between Local Time and UTC.
3. Inspect the field breakdown and view the next 10 scheduled execution dates.
Why use it?
Prevents catastrophic server automation mistakes such as jobs firing every minute instead of once daily.
Technical Scope & Calculation Limitations
Evaluates standard 5-field crontabs (minute 0-59, hour 0-23, dom 1-31, month 1-12, dow 0-6).
Frequently Asked Questions
From left to right: Minute (0–59), Hour (0–23), Day of Month (1–31), Month (1–12), and Day of Week (0–6 where 0 is Sunday).
Windows Desktop & Widget Options
All Windows widgets Want this capability on your Windows desktop?
Desktop App
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