Watt-hours to BTU converter

To convert watt-hours to BTU, enter the value in the first field. The result in BTU is calculated automatically using the exact conversion factor.

1 Wh ≈ 3.41214163313 BTU
1 BTU ≈ 0.293071070172 Wh

Formula: BTU ≈ Wh × 3.41214163313
Wh ≈ BTU × 0.293071070172

Definitions: 1 Wh = 3600 J; 1 BTU = 1055.05585262 J

The watt-hour (Wh) is the energy of one watt working for one hour, exactly 3,600 joules. It is used for the capacity of phone, laptop and power bank batteries and for small amounts of electricity.

The British thermal unit (BTU) here is the International Table BTU, about 1,055 joules, roughly the energy needed to raise one pound of water by one degree Fahrenheit. It is used in the United States for heating and cooling equipment, fuel content and natural gas.

See the conversion table with commonly used values, handy for quick reference or study.