Kilowatt-hour to British Thermal Unit Converter
One Kilowatt-hour equals 3412.141633 British Thermal Unit (1 kWh = 3412.141633 BTU). Multiply a Kilowatt-hour value by 3412.141633 to get the equivalent in British Thermal Unit. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
BTU = kWh × 3412.141633
Multiply the Kilowatt-hour value by 3412.141633 to get the equivalent value in British Thermal Unit.
Example Conversions
1 Kilowatt-hour (kWh)
3412.141633 British Thermal Unit (BTU)
5 Kilowatt-hour (kWh)
17060.70817 British Thermal Unit (BTU)
10 Kilowatt-hour (kWh)
34121.41633 British Thermal Unit (BTU)
25 Kilowatt-hour (kWh)
85303.54083 British Thermal Unit (BTU)
100 Kilowatt-hour (kWh)
341214.1633 British Thermal Unit (BTU)
Conversion Table
| Kilowatt-hour (kWh) | British Thermal Unit (BTU) |
|---|---|
| 0.1 | 341.2141633 |
| 0.5 | 1706.070817 |
| 1 | 3412.141633 |
| 2 | 6824.283266 |
| 5 | 17060.70817 |
| 10 | 34121.41633 |
| 25 | 85303.54083 |
| 50 | 170607.0817 |
| 100 | 341214.1633 |
| 250 | 853035.4083 |
| 500 | 1706070.817 |
| 1000 | 3412141.633 |
How to Convert Manually
Use these steps to convert Kilowatt-hour values to British Thermal Unit without the calculator.
- Write down the value in Kilowatt-hour (kWh) that you want to convert.
- Multiply that value by 3412.141633.
- For example, 10 Kilowatt-hour × 3412.141633 = 34121.41633 British Thermal Unit.
- Label the result as British Thermal Unit (BTU).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Kilowatt-hour and one British Thermal Unit.
About Kilowatt-hour and British Thermal Unit
The kilowatt-hour is exactly 3.6 megajoules — the unit on your electricity bill. Household consumption and electric vehicle battery sizes are stated in kilowatt-hours. The British thermal unit is about 1,055.06 joules — the heat to raise one pound of water by 1 °F. US heating and cooling equipment is rated in BTU per hour. One Kilowatt-hour equals 3412.141633 British Thermal Unit (1 kWh = 3412.141633 BTU). Kilowatt-hour to British Thermal Unit conversion comes up most often in electricity billing and in electric vehicle battery capacity, typically when figures need restating for air conditioner and furnace ratings in the US.
Precision and Rounding: Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Kilowatt-hour equals 51182.1245 British Thermal Unit.
15 kWh × 3412.141633 = 51182.1245 BTU
FAQ
How do I convert Kilowatt-hour to British Thermal Unit?
Multiply the Kilowatt-hour value by 3412.141633 to get the equivalent value in British Thermal Unit.
What is the formula for Kilowatt-hour to British Thermal Unit?
The formula is BTU = kWh × 3412.141633.
How many British Thermal Unit are in 1 Kilowatt-hour?
1 Kilowatt-hour equals 3412.141633 British Thermal Unit.
Can I convert British Thermal Unit back to Kilowatt-hour?
Yes. 1 British Thermal Unit equals 0.0002930710702 Kilowatt-hour, and the related converter can reverse the calculation.
What are common names for Kilowatt-hour and British Thermal Unit?
Kilowatt-hour is shown as kWh and may also be searched as kilowatt hour, kilowatt-hour, kwh. British Thermal Unit is shown as BTU and may also be searched as btu, british thermal unit.
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