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Liquid Flow & Pump Unit Conversions — GPM, L/min, m³/h, Feet of Head
Free pump and liquid flow conversion calculators. Convert GPM to m³/h, GPM to L/min, feet of head to PSI, NPSH calculations, pump efficiency, affinity laws, and more industrial pump engineering tools.
Liquid Flow & Pump Unit Conversions — GPM, L/min, m³/h, Feet of Head (66)
Bar to Meters of Head Converter
1 bar equals 10.197 meters of water column at 4°C (SG=1.0). The factor 10.197 comes from the hydrostatic...
Feet of Head to PSI Converter
Pressure at the bottom of a liquid column depends on the height of the column and the density of the liquid....
GPM to L/s Converter
1 US gallon equals 3.785412 liters. Converting per-minute to per-second involves dividing by 60. So 1 GPM =...
GPM to LPM Converter
1 US gallon equals 3.785412 liters. To convert from GPM to LPM, multiply by 3.785412. The US gallon is smaller...
GPM to m³/h Converter
One US gallon equals exactly 0.003785411784 cubic meters, a definition traceable to NIST and codified in...
Imperial GPM to US GPM Converter
The Imperial (UK) gallon is 4.54609 liters, while the US gallon is 3.785412 liters. Therefore, 1 Imperial GPM...
LPM to GPM Converter
1 liter equals 0.264172 US gallons. The per-minute rates share the same time base, so the conversion factor is...
m³/h to GPM Converter
1 cubic meter equals 264.172 US gallons. Converting the hourly rate to per-minute gives a factor of 264.172 ÷...
PSI to Feet of Head Converter
Pump performance curves are almost universally presented in feet (or meters) of head rather than pressure...
Pump Head Calculator
Pump head, formally known as Total Dynamic Head (TDH), quantifies the net mechanical energy imparted to the...
Head Loss to PSI Converter
Head loss in a piping system represents the energy lost to friction as fluid flows through pipes, fittings,...
NPSH Calculator
Net Positive Suction Head Available (NPSHa) is the absolute pressure head at the pump suction, minus the...
NPSHa Calculator
NPSHa (Net Positive Suction Head Available) quantifies how much pressure margin exists above the fluid's vapor...
Pump Affinity Law Calculator
The pump affinity laws describe how centrifugal pump performance changes when impeller speed changes. Flow (Q)...
Pump Efficiency Calculator
Pump hydraulic efficiency (η) is the ratio of useful hydraulic power delivered to the fluid — commonly called...
Specific Speed Pump Calculator
Specific speed (N_s) is a dimensionless index that characterizes the geometry and performance of a centrifugal...
Suction Head to PSI Converter
Suction head is the height of liquid column available at the pump inlet. Converting suction head to pressure...
Water Horsepower Calculator
Water horsepower (WHP) is the theoretical hydraulic power transferred from the pump to the fluid. It...