Converters

Power Converter

Convert power accurately between watts, kilowatts, megawatts, mechanical, metric and electric horsepower, with the horsepower type stated clearly.

Example: a device or engine has a power of 100 kilowatts. How many mechanical horsepower is that?

Power

From To

Result 134.102209 hp 100 kW = 134.102209 hp

One-unit equivalent 1 kW = 1.341022 hp A quick way to understand the relationship between the two units.

✓ Conversion factors match data and definitions from the National Institute of Standards and Technology (NIST)

How is the conversion calculated?

The value is converted to watts accurately, then to the requested unit. Do not confuse power in kilowatts (kW) with energy in kilowatt-hours (kWh).

This calculation runs in your browser. Your values are not sent to our server.

How it works

Enter the power value, then choose the current unit and the unit you want to convert to.
Example: 100 kilowatts is about 134.102209 mechanical horsepower.
Use the swap button to reverse the units without re-entering the value.
The converter uses the watt as its internal reference and keeps mechanical, metric and electric horsepower separate.
Power in kilowatts (kW) is different from energy in kilowatt-hours (kWh): one is a rate of power, the other is an amount of energy.

How many watts are in 1 kilowatt?

1 kilowatt equals exactly 1,000 watts.

How many kilowatts are in 1 megawatt?

1 megawatt equals exactly 1,000 kilowatts.

How many watts are in 1 mechanical horsepower?

1 mechanical horsepower (550 ft·lbf/s) is about 745.69987158227022 watts under the definitions used by this converter.

How many watts are in 1 metric horsepower?

1 metric horsepower equals 735.49875 watts.

How many watts are in 1 electric horsepower?

1 electric horsepower equals exactly 746 watts according to the NIST conversion table.

Are mechanical horsepower and metric horsepower the same?

No. Mechanical horsepower is slightly larger, so this converter labels the horsepower type explicitly.