Power Converter

Compare Different Units of Power

This Power Converter tool allows you to switch between various units of power. It's useful for engineers, physicists, and anyone needing to convert between watts (W), kilowatts (kW), and mechanical horsepower (hp).

The Conversion Formulas Explained

The calculator uses standard conversion factors, with the Watt as the base unit.

• 1 Kilowatt (kW) = 1,000 Watts (W)
• 1 Horsepower (hp) ≈ 745.7 Watts (W)
• 1 BTU/hour ≈ 0.293 Watts (W)

How to Use the Calculator

1. Enter Value: Input the power value you want to convert.
2. Select 'From' Unit: Choose the starting unit.
3. Select 'To' Unit: Choose the target unit. The converted result will appear instantly.

Real-World Example

A car engine is rated at 200 horsepower (hp). You want to know how many kilowatts (kW) this is.

1. Enter 200 in the 'From' field.
2. Select Horsepower (hp) as the 'From' unit.
3. Select Kilowatt (kW) as the 'To' unit.

• Calculation: 200 hp * 745.7 W/hp = 149,140 W. Then, 149,140 W / 1000 W/kW = 149.14 kW.
• The calculator will show the result: 149.14 kW.

Frequently Asked Questions (FAQ)

• What is a Watt? The Watt (W) is the SI unit of power, equivalent to one Joule per second. It measures the rate of energy transfer.
• Is there more than one type of horsepower? Yes. This calculator uses mechanical horsepower (or imperial horsepower), which is approximately 745.7 W. There is also metric horsepower (approx. 735.5 W) and electrical horsepower (exactly 746 W). For most common applications, the differences are small.
• What is BTU/hour? This is a unit of power commonly used for air conditioning and heating systems. It's related to the British Thermal Unit (BTU), a unit of heat.