Convert British thermal units to kilowatt-hours
Converting British thermal units to kilowatt-hours is a common energy task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 BTU equals 0.000293071 kWh, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert British thermal units to kilowatt-hours
To convert British thermal units to kilowatt-hours, multiply the number of British thermal units by 0.000293071. For example, 10 BTU × 0.000293071 = 0.00293071 kWh.
kWh = BTU × 0.000293071
- Write down the value in British thermal units you want to convert.
- Multiply it by 0.000293071 (the exact BTU→kWh factor).
- The result is your value in kilowatt-hours. Check it below with the converter or the table.
Conversion table
Common values of British thermal units and their equivalents in kilowatt-hours:
| BTU | kWh |
|---|---|
| 1 | 0.000293071 |
| 2 | 0.000586142 |
| 3 | 0.000879213 |
| 4 | 0.00117228 |
| 5 | 0.00146536 |
| 10 | 0.00293071 |
| 20 | 0.00586142 |
| 25 | 0.00732678 |
| 50 | 0.0146536 |
| 100 | 0.0293071 |
| 250 | 0.0732678 |
| 500 | 0.146536 |
About these units
British Thermal Unit (BTU). A British thermal unit is the energy to raise one pound of water by 1 °F, about 1,055 joules. Air conditioners, heaters and grills in the US are rated in BTU.
Kilowatt-hour (kWh). A kilowatt-hour is the energy delivered by one kilowatt over one hour, exactly 3.6 million joules. Household electricity bills and EV batteries are measured in kWh.
Frequently asked questions
How do I convert British thermal units to kilowatt-hours?
To convert British thermal units to kilowatt-hours, multiply the number of British thermal units by 0.000293071. For example, 10 BTU × 0.000293071 = 0.00293071 kWh. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kilowatt-hours are in 1 british thermal unit?
1 BTU = 0.000293071 kWh. That is the fixed relationship used by this converter and by international standards.
How many British thermal units are in 1 kilowatt-hour?
1 kWh = 3,412.14 BTU. If you are converting in the opposite direction, use our Kilowatt-hour to British Thermal Unit converter for the dedicated table and FAQ.
Is the British thermal units to kilowatt-hours conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.000293071 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is british thermal unit used for?
A British thermal unit is the energy to raise one pound of water by 1 °F, about 1,055 joules. Air conditioners, heaters and grills in the US are rated in BTU.