Are you looking for a fast and reliable way to size air ducts for your HVAC system? The Ductulator is the industry’s favorite tool for accurately calculating duct dimensions based on airflow (CFM), velocity, and friction rate.
What is a
Ductulator ?
A ductulator is a specialized duct sizing calculator used by HVAC professionals, engineers, and students. It helps determine the correct duct size—round or rectangular—to deliver optimal airflow while minimizing energy loss and noise. Traditional ductulators come as circular slide rules or digital apps and are designed according to ASHRAE standards.
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Key Features of Our Ductulator Tool
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Simple and intuitive interface—no technical expertise required
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Supports both round and rectangular ducts for flexibility
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Calculations based on ASHRAE guidelines for trusted accuracy
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Perfect for HVAC engineers, MEP designers, technicians, and students
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Free download and online access available
Download the Free Ductulator Tool
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Compatible with most Windows systems
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Android users: Find ductulator apps on Google Play
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Prefer using online? Access the web-based ductulator here
How to Use the Ductulator
Why Use a Ductulator?
Using a ductulator ensures that your HVAC system runs efficiently and quietly, avoiding undersized or oversized ducts. Proper duct sizing can reduce energy consumption and improve indoor air quality.
Frequently Asked Questions (FAQ)
Q: Is this ductulator free?
A: Yes, our ductulator is free for download and use.
Q: Is this tool suitable for students?
A: Absolutely! This tool is ideal for engineering students, professionals, and anyone learning about HVAC.
Q: Are the calculations based on any standard?
A: Yes, all calculations are based on ASHRAE guidelines.
Related Resources
Free Excel Tool to Estimate Duct Sheet Requirements
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