Power Converter

What is the Power Converter?

A power converter switches between units that measure the rate of energy use or transfer — watts, kilowatts, megawatts, horsepower, BTU per hour, and foot-pounds per second. You'll see these units when comparing car engine specs (horsepower), checking appliance energy consumption (watts), looking at generator capacity (kilowatts), or reading utility data (megawatts). CalciHub's power converter handles all standard units so you can quickly understand what any power figure actually means.

How Does It Work?

The watt (W) is the SI base unit for power. All other units convert to and from it using fixed ratios.

Formula:

Converted Power = Input Power × Conversion Factor

Common conversion factors:

1 kilowatt (kW) = 1,000 watts

1 horsepower (hp) = 745.7 watts

1 megawatt (MW) = 1,000,000 watts

1 BTU/hour = 0.293071 watts

Input Power: the value you want to convert

Conversion Factor: the fixed ratio between the two units

How to Use CalciHub's Power Converter

1. Enter the power value in the input field.

2. Select the unit you're converting from (e.g., horsepower, watts, kilowatts).

3. Select the unit you want the result in.

4. The converted figure appears right away.

Tip: When comparing appliances for energy efficiency, convert everything to watts so you can directly compare consumption — don't try to compare watts to horsepower mentally.

A Quick Example

A mechanic is checking whether a car's 180-horsepower engine translates to a competitive kilowatt rating for a European market where kW is the standard spec.

Input: 180 horsepower

Converting to kilowatts

180 × 0.7457 = 134.2 kW

Output: 134.2 kW

That figure can now be directly compared to European spec sheets. For the same car, European listings use kW — knowing the conversion keeps you from underselling or misreading what an engine actually delivers.

Frequently Asked Questions