Pump Unit Converter
Convert flow, pressure, head and power units in one place. Type in any field and every other unit updates instantly.
Type in any field: the others update instantly.
Flow
Pressure and head
Power
Head in metres or feet of water assumes water (specific gravity 1.0).
How the unit converter works
Type a value into any field and every other unit in that group updates at once. Each value is converted through a base unit (m³/h for flow, kPa for pressure, kW for power) using exact factors.
Common conversions
- Flow: 1 m³/h = 16.67 L/min = 0.278 L/s = 4.40 US GPM = 3.67 UK GPM
- Pressure: 1 bar = 100 kPa = 0.1 MPa = 14.50 psi = 10.20 m of water = 33.46 ft of water
- Power: 1 kW = 1.341 HP = 1.360 PS
Pressure and head
Pump head is quoted in metres or feet of the liquid being pumped. The converter uses water, so for a heavier or lighter liquid divide the head by its specific gravity. To work out the head your pipeline needs, use the pump head calculator.
Frequently Asked Questions
One US gallon per minute is 3.785 L/min, or 0.227 m³/h. One UK (imperial) gallon per minute is larger: 4.546 L/min, or 0.273 m³/h.