KW to HP Calculator

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Kilowatts (KW)

Kilowatts (KW) are units of power in International System of Units (SI). The kilowatt’s base unit is the watt, named for Scottish inventor James Watt. 

As with SI units, the prefix kilo- indicates that a kilowatt equals 1000 watts (or) 1000 joules per second.

1 KW = 1000 Watts (or) 1000 Joules/sec

The kilowatt’s basis unit is the watt, which became known after Scottish inventor James Watt. 

He described the unit under the system of units in use at the time.

Kilowatts are now widely used around the world to describe engine output power as well as the energy generated by electric motors, tools, machinery, and heaters. 

A house’s electricity use is usually expressed in kilowatt hours, (or) kWh, which equals 1000 watts applied during a single hour. 

Megawatt (or) gigawatt hours can be employed in larger structures or for industrial purposes.

Horsepower (HP)

Horsepower (HP) is a unit of measurement for power (rate of work). Mechanical horsepower, commonly known as imperial horsepower, is roughly 745.7 watts (550 ft·lbf/s), and 

metric horsepower corresponds to 735.5 watts (75 kgf·m/s). 

Boiler horsepower, a less frequent measurement than imperial or metric horsepower, is used to grade steam boilers and equals 34.5 pounds of water evaporated every hour at 212 degrees Fahrenheit, (or) 9809.5 watts.

Furthermore, when rating electric motors, 1 horsepower equals 746 watts.

1 HP = 746 watts

How to convert kW to HP?

To convert kW to HP, multiply the power value by 1.34102.

Ex: If an engine produces 75 kW, the corresponding horsepower is approximately 100.5765 HP.

How many kW in 1 HP?

1 HP is approximately 0.7457 kW. This means that one horsepower equals 0.7457 kilowatts.

1 HP = 745.7 watts (or) 746 watts

1 HP = 0.7457 kW (or) 0.746 kW

kW to HP Formula

The formula for converting kW to HP is:

HP = kW x 1.3410

Solved Example

If an electric motor produces 10 kW, its corresponding power in horsepower is the following:

HP = 10 x 1.3410 = 13.410

Kilowatts to Horsepower Conversion Chart

KW to HP Conversion Chart

These are the complete conversions from kilowatts to horsepower.

Why is kW to HP essential for Electricians?

Accurate Sizing

Recognizing the conversion allows for the proper selection of motors, drives, & systems for specific activities.

Efficiency

Selecting the appropriate power rating improves energy efficiency and reduces costs.

Safety

Incorrect power ratings can cause equipment failure and pose major safety hazards.

Electricians, Engineers, & Installers

Understanding power ratings is more than just numbers; it is about assuring safety & efficiency in all installations. Let us continue to increase awareness while working.