kWh to BTU Calculator
Convert kWh to BTU, MMBtu, therms, and megajoules. WattSimple also shows the same amount of energy expressed as fuel — gallons of propane, heating oil, gasoline, or diesel — using the EIA energy-content figures.
The same energy, as fuel
- Therms of natural gas
- 3.412 therms
- Gallons of propane
- 3.731 gal
- Gallons of heating oil (No. 2)
- 2.464 gal
- Gallons of gasoline
- 2.837 gal
- Gallons of diesel
- 2.484 gal
Higher-heating-value energy content per unit of fuel, from the EIA energy conversion tables. These compare the energy contained, not the useful heat delivered — a gas furnace at 80% AFUE turns only 80% of a therm into room heat, while a heat pump delivers several times the energy content of the electricity it draws.
British thermal units
341,214 BTU
- Kilowatt-hours
- 100 kWh
- BTU
- 341,214
- MMBtu
- 0.34121
- Therms
- 3.4121
- Megajoules
- 360 MJ
1 kWh = 3,412.142 BTU · 1 therm = 100,000 BTU · 1 MMBtu = 10 therms
Frequently asked questions
Ask AI about this
Open an AI assistant with a question grounded in this page.
Related tools
Related converters
Watts ↔ kWh
Convert watts to kilowatt-hours (or kWh to watts) by run time — turn an appliance's wattage into the energy it uses, the unit your utility bills.
Open converterBTU ↔ kW
Convert BTU/hr to kW, watts, and refrigeration tons (or kW back to BTU) for heat pumps, AC, and furnaces — compare heating and cooling output across units.
Open converterMWh ↔ kWh
Convert megawatt-hours to kilowatt-hours and back — plus watt-hours and gigawatt-hours. 1 MWh = 1,000 kWh. Enter any energy unit to see the rest.
Open converterkWh ↔ MWh
Convert kilowatt-hours to megawatt-hours — MWh = kWh ÷ 1,000 — plus watt-hours and gigawatt-hours. For utility data, solar production, and grid-scale figures.
Open converterSources & standards
This tool's methodology and data follow US standards and authoritative public datasets: