Enter the energy in BTU into the calculator to determine the power in Watts; this calculator can also evaluate the energy in BTU given the power in Watts is known.

Btu To Watts Formula

The following formula is used to calculate the conversion from BTU (British Thermal Units) to Watts:

W = BTU * 0.29307107


  • W is the power in Watts
  • BTU is the energy in British Thermal Units

To convert BTU to Watts, multiply the energy in BTU by the conversion factor 0.29307107. The result will be the power in Watts.

What is a Btu To Watts?

A British Thermal Unit (BTU) and a watt (W) are two different units of measurement for energy. A BTU is a unit of heat energy in the Imperial system commonly used in the United States, particularly in heating and cooling systems. It represents the amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit. On the other hand, a watt is a unit of power in the International System of Units (SI) and it measures the rate of energy conversion or transfer. It is defined as one joule per second. The conversion from BTU to watts is not direct as they measure different things (heat energy vs power), but it can be done under specific conditions. For instance, if you know the number of BTUs per hour (a measure of power), you can convert to watts by using the conversion factor of approximately 0.29307107 watts per BTU per hour.

How to Calculate Btu To Watts?

The following steps outline how to convert Btu to Watts:

  1. First, determine the Btu value.
  2. Next, use the conversion factor: 1 Btu = 0.29307107 Watts.
  3. Multiply the Btu value by the conversion factor to get the equivalent Watts value.
  4. Finally, calculate the conversion from Btu to Watts.
  5. After inserting the Btu value and calculating the result, check your answer with a conversion calculator.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Btu value = 500