How to Use the Power Unit Converter
Electrical and mechanical power output is labeled in different units depending on the field. Cars and motors typically use horsepower, appliances use kW, and heating/cooling equipment uses BTU/h — so comparing specs across categories often requires a unit conversion.
Enter a value and select its unit to instantly see the equivalent in kW, horsepower (HP), and BTU/h at the same time. Use it to convert a car engine's horsepower to kW for insurance rating comparisons, convert a generator or motor's kW rating to horsepower to compare against overseas specs, or check a boiler or air conditioner's BTU/h capacity in kW.
Horsepower here is calculated using mechanical horsepower (745.7W). Depending on the country or industry, other standards such as metric horsepower (PS, 735.5W) are sometimes used, so for precise comparisons, confirm which horsepower standard applies.
Frequently Asked Questions
1 kW is about 1.341 horsepower. Conversely, 1 horsepower is about 0.7457 kW.
1 kW equals about 3,412 BTU/h. For example, a 9,000 BTU/h air conditioner is about 2.64 kW.
This calculator uses mechanical horsepower (745.7W). Depending on the country or industry, other standards like metric horsepower (PS, 735.5W) are sometimes used instead, so check which standard applies for precise comparisons.