Watts are a unit of power, whereas a BTU is a measurement of energy. A single BTU per hour corresponds to approximately 0.293 watts of power.

BTUs do not convert directly to watts because BTUs measure energy and watts measure power. However, BTUs per hour can be converted to watts; one BTU per hour is approximately 0.293 watts, according to Rapid Tables. Similarly, 10,000 BTUs per hour corresponds to 2,930 watts. Conversely, a single watt converts to approximately 3.412 BTUs per hour. BTUs convert to other units of energy, such as joules. A single BTU is equal to approximately 1,055 joules of energy.