Power Converter
Convert between watts, kilowatts, horsepower and BTU/h.
Result
Results are estimates for general information only and are not professional advice.
Power units
Power — the rate of energy use — is measured in watts, kilowatts, horsepower and BTU per hour. This converter switches between them, useful for engines, appliances and heating or cooling equipment.
Frequently Asked Questions
What is the Power Converter?
Convert between watts, kilowatts, horsepower and BTU/h. It runs instantly in your browser and is completely free to use.
What do I need to enter to use the Power Converter?
The Power Converter asks for the following values (3): Value, From, To. Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Power Converter?
The Power Converter uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Power Converter free, and do I need an account?
Yes. The Power Converter — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.