Duct Fitting Loss Calculator Online

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

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

By calculating both straight duct friction loss and fitting loss, they provide the total static pressure needed for proper duct design. Key Data Used in Calculations The calculator converts the resistance of a fitting

By accurately sizing fans, you prevent over-pressurizing the system, which wastes energy. you prevent over-pressurizing the system

The speed of the air (FPM or m/s), which directly affects friction.

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