Hydraulic Power Calculator
Calculate hydraulic power from system pressure and flow rate using P = ΔP × Q.
How it works
- 1Enter the system pressure in bar (or psi) and the flow rate in L/s (or gpm).
- 2The calculator converts both to SI and applies P = ΔP × Q.
- 3Hydraulic power is shown in kW, hp, and W.
Use cases
- Sizing hydraulic power units (HPUs) for industrial machinery.
- Estimating power for mobile hydraulics on construction equipment.
- Verifying a pump or motor meets a circuit’s power demand.
Frequently asked questions
What formula does the calculator use?
P = ΔP × Q, with ΔP in pascals and Q in m³/s. 200 bar (20,000,000 Pa) × 0.001 m³/s (1 L/s) = 20,000 W = 20 kW.
Why is real pump power higher?
This is the fluid power delivered. A real pump has losses, so input shaft power = hydraulic power ÷ overall efficiency (typically 0.80–0.92).
How do I convert bar and psi?
1 bar = 14.5038 psi. Switch to imperial mode and the calculator converts automatically.
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