How to convert british thermal units to watt-hours
To convert a measurement in british thermal units to watt-hours, multiply the value by 0.293071070172. The conversion factor comes from the relationship between both units and the joule.
For example, to convert 5 BTU to watt-hours: 5 × 0.293071070172 = 1.465355 Wh.
What is a british thermal unit?
A British thermal unit (BTU) is the energy needed to raise the temperature of one pound of water by one degree Fahrenheit, about 1,055 joules. The BTU arose from imperial heating and steam engineering. It remains the dominant unit for heating, ventilation, and air-conditioning capacity in the United States, where furnaces and air conditioners are rated in BTU.
Common uses of british thermal units include: Air conditioner and furnace ratings; Heating and cooling load calculations; Natural gas and fuel energy content; HVAC system sizing in the US.
What is a watt-hour?
A watt-hour is the energy delivered by one watt of power over one hour, equal to 3,600 joules. The watt-hour emerged with the electrical industry as a practical measure of energy use over time. It underpins the kilowatt-hour that appears on electricity bills worldwide.
Common uses of watt-hours include: Battery capacity ratings; Small electronics energy use; Solar panel and storage sizing; Portable power station specifications.
British Thermal Units to watt-hours worked examples
Here are some common values converted:
1 BTU = 0.293071070172 Wh 5 BTU = 1.465355 Wh 10 BTU = 2.930711 Wh 50 BTU = 14.653554 Wh 100 BTU = 29.307107 Wh
Frequently asked questions
How many watt-hours are in one british thermal unit?
One british thermal unit (BTU) equals 0.293071070172 watt-hours (Wh). Multiply any value in british thermal units by 0.293071070172 to convert to watt-hours.
How do I convert british thermal units to watt-hours?
Multiply the value in british thermal units by 0.293071070172. For example, 5 BTU × 0.293071070172 = 1.465355 Wh.
How do I convert watt-hours to british thermal units?
Multiply the value in watt-hours by 3.412142, or divide by 0.293071070172. Use the swap button on the converter above to reverse the direction.
Is the british thermal unit to watt-hour conversion exact?
The thermochemical calorie is defined as exactly 4.184 J and the BTU as 1055.056 J. Conversions between SI energy units are exact.
What is the formula for british thermal units to watt-hours?
The formula is: Wh = BTU × 0.293071070172. This comes from the definition of both units relative to the joule.