How do I calculate Pump Sizing — Head & Power?

To calculate Pump Sizing — Head & Power: Enter Required flow Q, Static head H_s, Friction losses H_f and other values. Click Calculate. INDUGRID computes the result instantly using the formula: H_total = H_static + H_friction + H_velocity | P_shaft = ρgQH / (1000 × η). No registration required.

What units does the Pump Sizing — Head & Power calculator use?

The Pump Sizing — Head & Power calculator uses the following units: m³/h, m, kg/m³, %. SI units are used by default.

Is the Pump Sizing — Head & Power calculator free?

Yes. The INDUGRID Pump Sizing — Head & Power calculator is completely free, requires no account or login, and works on desktop and mobile browsers.

Fluid Mechanics

Pump Sizing — Head & Power

Calculate total system head and required pump power for centrifugal or positive displacement pumps.

Units:

in LinkedIn

💡Always add 10–15% margin to the calculated head when selecting a pump. The pump curve must intersect the system curve at or above your design point. For viscous fluids (oils, glycols), apply viscosity correction factors — centrifugal pump performance degrades significantly above 50 cSt.

H_total = H_static + H_friction + H_velocity | P_shaft = ρgQH / (1000 × η)

Input

Required flow Q iRequired volumetric flow rate in m³ per hour.

m³/h

Static head H_s iVertical height difference between suction surface and delivery point in metres.

Friction losses H_f iTotal friction losses in pipes, fittings and valves in metres of head. Calculate from Darcy-Weisbach or estimate 1–3 m per 100m of pipe.

Fluid density iFluid density. Water: 1000, Glycol 50%: 1073, Light oil: 870 kg/m³.

kg/m³

Pump efficiency η iOverall pump efficiency including hydraulic, volumetric and mechanical losses. Centrifugal at BEP: 65–85%. Gear pump: 75–90%.

Result

Total system head H [m] —

Hydraulic power P_hyd [kW] —

Shaft power required [kW] —

Recommended motor size [kW] —

NPSH note —