Hvac Duct Calculator
Calculate the required duct size for HVAC systems based on airflow and friction loss. This tool helps HVAC professionals and DIY enthusiasts determine the appropriate round or rectangular duct dimensions for efficient air distribution.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
Previous Results
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Frequently Asked Questions
It calculates the required round duct diameter or rectangular duct dimensions based on airflow (CFM) and friction loss (in/100ft) for efficient HVAC system design.
Airflow is in CFM (cubic feet per minute), friction loss in inches of water per 100 feet, and dimensions in inches.
The calculator uses standard engineering formulas (ASHRAE fundamentals) for duct sizing. However, always consult with a professional for final design.
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