It is particularly handy to provide the area in square feet of round duct as well.
Square to round duct calculator.
Add for left seam.
Equivalent duct calculator round vs rectangular.
Friction loss calculator for sheet metal ducts.
Flexible duct round metal pipe 750 1200 14 16 design airflow 50 85 125 1500 2000 180 240 325 525.
Add for right seam.
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Cui devices air flow conversion calculator can be used to convert between common units for volume air flow and air velocity flowing past a point in a specified area of duct.
Round use a slightly smaller diameter for less crimping or to finish the top with an added round collar lower.
Convert round duct size to rectangular duct size for equivelant airflow.
Rectangular to round conversion.
Square to round calculator.
Read round duct diameter inches and friction loss per 100 of duct inches of water.
Friction loss calculator for flexible ducts.
The rectangular dimensions and the air flow volume are adapted to the equal friction loss.
Wide x deep lower scrape.
1 of 2 identical pieces like a clam.
To use the calculator enter your air velocity or volume air flow and duct area type select your units click calculate air flow and your converted velocity and volume.
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Other hart cooley mobile tools.
Remember to add if bending the lower scrape in or out upper diameter.
The table below can be used to compare equivalent diameters for rectangular and round circular ducts.
I want to calculate.
The table is based on the ducts friction loss formula.
Sheet metal duct friction loss calculator.
This calculator can be used to calculate the area in square feet when the height inches and width inches of rectangular duct is known.
Enter duct airflow cfm duct velocity fpm duct length and the number of bends.
New duct sizing chart xls.
Tolerance of 125 will be automatically added to each dimension.
The equivalent diameter is the diameter of a circular duct or pipe that gives the same pressure loss as an equivalent rectangular duct or pipe.
This is a handy tool when deciding what size duct you want to use for your application.