Water Pump Calculator
Calculate water pump requirements including flow rate, head, and power. Determine the right pump specifications for residential, agricultural, or industrial applications.
Step 1: Pump Parameters
Understanding Pump Parameters
Flow rate is the volume of water the pump moves per unit of time. Total head is the height the pump can lift water, including friction losses. Pump efficiency represents how effectively the pump converts electrical energy to hydraulic energy.
Step 2: Additional Options
About Pump Efficiency
Pump efficiency varies by type and size. Centrifugal pumps typically range from 40-85%, while positive displacement pumps can reach 90% efficiency. Higher efficiency pumps cost more initially but save energy over time.
Pump Calculation Results
Required Pump Power
Pump Type Comparison
| Pump Type | Typical Efficiency | Required Power | Annual Energy Cost* |
|---|
*Based on 8 hours/day operation, 365 days/year, $0.12/kWh electricity cost
Power Breakdown
Pump Power Formula
Pump Power (HP) = (Flow Rate × Total Head × Specific Gravity) / (3960 × Efficiency)
This formula calculates the hydraulic horsepower required for a pump. To get shaft power (power input to the pump), divide the hydraulic power by the pump efficiency. For metric units, different conversion factors apply.
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