Convert 221 Kilowatt Hours to BTUs

A kilowatt hour is a unit of energy commonly used to measure electricity consumption. It is the equivalent of using a kilojoule every second for an hour. Therefore, a kilowatt hour is 3.6 million joules.

A British thermal unit is the amount of energy required to heat a pound of water by 1 degree Fahrenheit. This can vary slightly depending on the temperature of the water, therefore different estimates for the BTU exist. The International Standards Organization defines a BTU as 1055.056 joules.