How many Watts in 1 Horsepower?

1 Mechanical (Imperial) Horsepower is approx 745.7 Watts. However, 'Metric Horsepower' (PS) is slightly different (~735.5 Watts). This tool uses the standard Mechanical HP.

A BTU (British Thermal Unit) measures heat energy. In power contexts (like AC units), we use BTUs per hour (BTU/h). 1 Watt is approx 3.41 BTU/h.

What is the difference between kW and kWh?

kW (Kilowatt) is a unit of Power (rate of energy use), while kWh (Kilowatt-hour) is a unit of Energy (total amount used). It's like the difference between Speed (mph) and Distance (miles).

How many kW to run a house?

Typical homes normally draw 1-3 kW on average, but can spike to 10-15 kW when running AC, dryers, and ovens simultaneously. Backup generators are often sized in kW.

Power Converter

Power Converter Overview

Convert Watts, HP, BTU/h

The Power Converter is a specialized tool for engineers, HVAC technicians, and automotive enthusiasts. It simplifies the conversion between different units of power—the rate at which work is done. Common confusions, such as the difference between electrical Kilowatts (kW) and mechanical Horsepower (hp), are resolved instantly. This calculator is vital for sizing generators, comparing car engine specs, or calculating the cooling capacity of an air conditioner in BTUs. It supports the International System (Watts) as well as Imperial and US Customary units, ensuring you have the right data for any technical project.

How to Use Power Converter

Enter the power value (e.g., 250).
Select the 'From' unit (e.g., Horsepower).
Select the 'To' unit (e.g., Kilowatts).
The equivalent power is calculated immediately.
Use the swap icon to reverse the direction.

Frequently Asked Questions

How many Watts in 1 Horsepower?: 1 Mechanical (Imperial) Horsepower is approx 745.7 Watts. However, 'Metric Horsepower' (PS) is slightly different (~735.5 Watts). This tool uses the standard Mechanical HP.
What is a BTU?: A BTU (British Thermal Unit) measures heat energy. In power contexts (like AC units), we use BTUs per hour (BTU/h). 1 Watt is approx 3.41 BTU/h.
What is the difference between kW and kWh?: kW (Kilowatt) is a unit of Power (rate of energy use), while kWh (Kilowatt-hour) is a unit of Energy (total amount used). It's like the difference between Speed (mph) and Distance (miles).
How many kW to run a house?: Typical homes normally draw 1-3 kW on average, but can spike to 10-15 kW when running AC, dryers, and ovens simultaneously. Backup generators are often sized in kW.

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