Duct Fitting Loss Calculator Apr 2026

The diameter (round) or height and width (rectangular) of the duct.

Proper sizing prevents noisy systems and ensures adequate air delivery to rooms.

They calculate the pressure loss in inches of water gauge ("wg) or Pascals (Pa) for various round and rectangular fittings. duct fitting loss calculator

Common tools for this include digital apps from industry leaders like Price Industries or online calculators. If you can tell me:

The speed of the air (FPM or m/s), which directly affects friction. The diameter (round) or height and width (rectangular)

you are calculating (e.g., radius elbow, mitered bend, reducer)? What is your airflow rate (CFM) and duct size ?

Specifically identifying if it's a 90-degree elbow, a tee, or a reducing transition. Why You Should Use One Common tools for this include digital apps from

The calculator converts the resistance of a fitting into an equivalent length of straight duct, allowing for easier total pressure calculations.