This power unit converter is an essential calculation tool designed for engineers mechanics physicists and students. It allows you to swiftly and accurately translate energy transfer rates across multiple measurement standards including watts kilowatts megawatts and mechanical horsepower.
Power Unit Conversion Formula
Power measures the rate at which work is done or energy is transferred. In the International System of Units the base unit for power is the watt. All other power measurements can be converted by multiplying or dividing by their specific structural ratio to the base watt.
1 Kilowatt (kW) = 1000 Watts (W)
1 Mechanical Horsepower (hp) = 745.699872 Watts (W)
To convert from a larger unit to a smaller unit you multiply the value. To convert from a smaller unit to a larger unit you divide.
Kilowatt to Horsepower Formula
A very common calculation in the automotive and electrical engineering sectors is translating kilowatts into mechanical horsepower. Because one horsepower equals roughly 745.7 watts and a kilowatt is exactly 1000 watts the conversion factor is approximately 1.341.
Horsepower = Kilowatts x 1.34102
Example: An electric motor rated at 50 kilowatts produces mechanical power. You multiply 50 by 1.34102 which gives you an output of approximately 67.05 horsepower.
Common Horsepower to Kilowatt Conversions
| Horsepower (hp) | Kilowatts (kW) |
|---|---|
| 1 hp | 0.7457 kW |
| 5 hp | 3.7285 kW |
| 10 hp | 7.4570 kW |
| 25 hp | 18.6425 kW |
| 50 hp | 37.2850 kW |
| 100 hp | 74.5700 kW |
| 150 hp | 111.8550 kW |
| 200 hp | 149.1400 kW |
Frequently Asked Questions
What is the difference between a watt and a kilowatt?
A kilowatt is simply a larger scale of measurement for the exact same metric. The prefix kilo means one thousand. Therefore one kilowatt is equal to exactly one thousand individual watts.
How do you calculate electrical power?
In direct current electrical systems power is calculated by multiplying the voltage by the current. If you have an appliance drawing 2 amps at 120 volts the appliance is utilizing 240 watts of power.
Is mechanical horsepower the same as electrical horsepower?
They are extremely close but technically distinct. Mechanical or imperial horsepower equals 745.699 watts. Electrical horsepower commonly used for electrical motors is defined as exactly 746 watts. This converter utilizes the standard mechanical metric.
What is a megawatt used to measure?
A megawatt represents one million watts or one thousand kilowatts. This massive scale is typically used to measure the output of commercial power plants large wind turbines and the energy consumption levels of entire city blocks or heavy industrial manufacturing plants.
Why do car engines use horsepower instead of kilowatts?
Horsepower is a historical unit dating back to the late eighteenth century when engineers needed a way to compare the output of new steam engines with the power of draft horses. It became the industry standard for consumer combustion engines. However modern electric vehicles and international standard measurements increasingly express motor output in kilowatts.