Convert kilowatt-hours to British thermal units
Converting kilowatt-hours to British thermal units is a common energy task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 kWh equals 3,412.14 BTU, 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 kilowatt-hours to British thermal units
To convert kilowatt-hours to British thermal units, multiply the number of kilowatt-hours by 3,412.14. For example, 10 kWh × 3,412.14 = 34,121.4 BTU.
BTU = kWh × 3,412.14
- Write down the value in kilowatt-hours you want to convert.
- Multiply it by 3,412.14 (the exact kWh→BTU factor).
- The result is your value in British thermal units. Check it below with the converter or the table.
Conversion table
Common values of kilowatt-hours and their equivalents in British thermal units:
| kWh | BTU |
|---|---|
| 1 | 3,412.14 |
| 2 | 6,824.28 |
| 3 | 10,236.4 |
| 4 | 13,648.6 |
| 5 | 17,060.7 |
| 10 | 34,121.4 |
| 20 | 68,242.8 |
| 25 | 85,303.5 |
| 50 | 170,607 |
| 100 | 341,214 |
| 250 | 853,035 |
| 500 | 1,706,070 |
About these units
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.
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.
Frequently asked questions
How do I convert kilowatt-hours to British thermal units?
To convert kilowatt-hours to British thermal units, multiply the number of kilowatt-hours by 3,412.14. For example, 10 kWh × 3,412.14 = 34,121.4 BTU. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many British thermal units are in 1 kilowatt-hour?
1 kWh = 3,412.14 BTU. That is the fixed relationship used by this converter and by international standards.
How many kilowatt-hours are in 1 british thermal unit?
1 BTU = 0.000293071 kWh. If you are converting in the opposite direction, use our British Thermal Unit to Kilowatt-hour converter for the dedicated table and FAQ.
Is the kilowatt-hours to British thermal units conversion exact?
Yes. Both units are defined by international agreement, so the factor of 3,412.14 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is kilowatt-hour used for?
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.