Convert HP - kW
Online calculator and formulas for converting HP and kW
HP - kW Calculator
Convert power units
Converts between Horsepower (HP) and Kilowatt (kW). Kilowatt is the modern SI unit for power, HP is the traditional unit.
Example Calculation
Example: Electric Motor
Problem:
An electric motor has a power of 100 kW. How much HP does this correspond to in the traditional designation?
Given:
- Motor power = 100 kW
- Conversion factor: 1 kW = 1.35962 HP
- Find: Power in HP
Solution:
Practical Applications
Conversion Aids
Quick conversion
- 1 kW ≈ 1.36 HP
- 1 HP ≈ 0.735 kW
- 10 kW ≈ 13.6 HP
Typical values
- Hair dryer: ~2 kW (2.7 HP)
- Electric car: ~100 kW (136 HP)
- Wind turbine: ~2000 kW (2720 HP)
Formulas for HP and kW
Kilowatt (kW) is the modern SI unit for power, while Horsepower (HP) is the traditional power unit. Both describe the same physical quantity.
Convert kW to HP
Conversion from kilowatt to horsepower (metric).
Convert HP to kW
Conversion from horsepower to kilowatt (SI unit).
Kilowatt (kW)
- System: International System of Units (SI)
- Definition: 1 kW = 1000 Watts
- Usage: Worldwide, modern technology
- Basis: Joules per second (J/s)
Horsepower (HP)
- System: Metric system (Germany)
- Definition: 1 HP = 735.5 Watts
- Usage: Traditional, automotive industry
- Basis: Work performance of a horse
Important Notes
- kW is the modern international standard unit for power
- HP is mainly used today in the automotive industry
- 1 kW is about 36% stronger than 1 HP
- Both units measure the same physical quantity: power
Detailed description of power units
Modern vs. traditional units
With this calculator, Kilowatt (kW) can be converted to Horsepower (HP) or Horsepower to Kilowatt. Kilowatt is the modern SI unit for power, while HP is the traditional unit.
Usage Instructions
To calculate, select whether HP to kW or kW to HP should be calculated and enter the required value, then click the 'Calculate' button.
Application Areas
Electrical Engineering
Electric motors, generators, drive systems, power electronics. Kilowatt is the standard unit here.
Mechanical Engineering
Industrial plants, pumps, compressors, hydraulic systems. Both units are used depending on context.
Energy Technology
Power plants, solar panels, wind turbines, energy supply. Kilowatt and megawatt are the standard units.
Practical Power Comparisons
For better understanding, here are some examples of typical power ratings in both units:
Household
Microwave: 0.8 kW (1.1 HP)
Vacuum cleaner: 1.5 kW (2.0 HP)
Hair dryer: 2.0 kW (2.7 HP)
Vehicles
E-bike motor: 0.25 kW (0.34 HP)
Small car: 50 kW (68 HP)
Truck: 300 kW (408 HP)
Industry
Industrial pump: 10 kW (13.6 HP)
Wind turbine: 2000 kW (2720 HP)
Power plant: 500,000 kW (680,000 HP)
Conclusion: For larger powers, the numbers in kW become clearer, while HP is often more intuitive.
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