Pressure Drop Calculator

Calculate the pressure drop across your compressed air piping system including fittings and valves.

System Parameters

Air Flow Rate (CFM)

Inlet Pressure (PSI)

Pipe Diameter

Pipe Length (metres)

Each fitting adds an equivalent pipe length, increasing total pressure drop.

90° Elbows

45° Elbows

Tees

Gate Valves

Ball Valves

Check Valves

Fittings Equivalent Length

9.2 m

Total Equivalent Length: 39.2 m

Pressure Drop

61.12 PSI

421.4 kPa

Drop as % of Inlet

61.1%

Excessive Pressure Drop

Drop exceeds 5%. Consider increasing pipe size, reducing run length, or minimising fittings.