Horsepower to kW Calculator
Convert horsepower (HP) to kilowatts (kW).

- Horsepower to Kilowatt (HP to KW)
- What is Horsepower (HP)?
- What is a Kilowatt (KW)?
- Three Methods Of Converting Horsepower to Kilowatts
- 1. Imperial/Mechanical HP to KW
- 2. Electrical HP to KW
- 3. Metric HP to KW
- Electrical Horsepower to Kilowatt Conversion Table
- Imperial/Mechanical Horsepower to Kilowatt Conversion Table
- Related Tools
- Author
Horsepower to Kilowatt (HP to KW)
Knowing how horsepower connects to kilowatts is super helpful for stuff like cars and factory machines.
What is Horsepower (HP)?
Horsepower is a unit of power that measures the rate at which work is done. It originated from the power output of horses.
- Imperial/Mechanical HP = 745.7 watts (commonly used in US/UK)
- Electrical HP = 746 watts (used in electrical systems)
- Metric HP = 735.5 watts (used in many European countries)
What is a Kilowatt (KW)?
A kilowatt is a unit of power equal to 1,000 watts. It is commonly used to measure electrical power.
- 1 KW = 1000 watts
- 1 KW = 1000 joules per second
- It’s the standard unit for measuring electrical power
Three Methods Of Converting Horsepower to Kilowatts
1. Imperial/Mechanical HP to KW
The Magic Formula:
P(kW) = 0.7457 ร P(hp)
Example
Converting 10 horsepower to kilowatts:
P(kW) = 0.7457 ร 10 hp = 7.457 kW
Your 10 hp engine is equivalent to 7.457 kilowatts!
2. Electrical HP to KW
The Simple Formula:
P(kW) = 0.746 ร P(hp)
Example
For a 10 hp electrical motor:
P(kW) = 0.746 ร 10 hp = 7.46 kW
Your electrical motor uses 7.46 kilowatts!
3. Metric HP to KW
European Standard Formula:
P(kW) = 0.7355 ร P(hp)
Let’s Calculate
For a 10 hp European machine:
P(kW) = 0.7355 ร 10 hp = 7.355 kW
That’s 7.355 kilowatts in the metric system!
Electrical Horsepower to Kilowatt Conversion Table
This table provides the conversion from electrical horsepower to kilowatts (kW).
Electrical Horsepower (hp) | Kilowatts (kW) |
---|---|
1 hp | 0.7460 kW |
0.1 hp | 0.07460 kW |
0.5 hp | 0.3730 kW |
2 hp | 1.4920 kW |
5 hp | 3.7300 kW |
10 hp | 7.4600 kW |
15 hp | 11.1900 kW |
20 hp | 14.9200 kW |
25 hp | 18.6500 kW |
30 hp | 22.3800 kW |
40 hp | 29.9200 kW |
50 hp | 37.3000 kW |
75 hp | 55.2300 kW |
100 hp | 74.6000 kW |
Imperial/Mechanical Horsepower to Kilowatt Conversion Table
This table provides the conversion from imperial/mechanical horsepower to kilowatts (kW).
Imperial/Mechanical Horsepower (hp) | Kilowatts (kW) |
---|---|
1 hp | 0.7457 kW |
0.1 hp | 0.07457 kW |
0.5 hp | 0.373 kW |
2 hp | 1.491 kW |
5 hp | 3.735 kW |
10 hp | 7.460 kW |
15 hp | 11.185 kW |
20 hp | 14.913 kW |
25 hp | 18.641 kW |
30 hp | 22.368 kW |
40 hp | 29.832 kW |
50 hp | 37.296 kW |
75 hp | 55.215 kW |
100 hp | 74.576 kW |