Pump Total Dynamic Head

Find a pump's total dynamic head from suction and discharge gauge readings, elevation and pipe velocities, free online.

Suction gauge pressure (kPa)

Discharge gauge pressure (kPa)

Elevation of discharge gauge above suction gauge (m)

Flow rate (L/s)

Suction pipe diameter (mm)

Discharge pipe diameter (mm)

Density (kg/m³)

About this calculator

Total dynamic head TDH = (P_d − P_s) ÷ (ρg) + (z_d − z_s) + (v_d² − v_s²) ÷ 2g, using gauge pressures at the discharge and suction flanges. Hydraulic power = ρ g Q H.