Convert British Thermal Unit to Watt Hour
Use this free converter to change british thermal units (BTU) into watt hours (Wh). British thermal unit and watt hour both measure energy. As a quick reference, 1 BTU equals 0.29307107 Wh, and 1 Wh equals 3.4121416 BTU.
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Watt Hour (Wh)
0.29307107
1 BTU = 0.29307107 Wh
Energy conversion table
| British Thermal Unit | Watt Hour |
|---|---|
| 0.01 | 0.0029307107 |
| 0.1 | 0.029307107 |
| 0.5 | 0.14653553 |
| 1 | 0.29307107 |
| 2 | 0.58614214 |
| 3 | 0.87921321 |
| 5 | 1.4653553 |
| 10 | 2.9307107 |
| 20 | 5.8614214 |
| 25 | 7.3267767 |
| 50 | 14.653553 |
| 100 | 29.307107 |
| 1,000 | 293.07107 |
How to convert British Thermal Unit to Watt Hour
Multiply the british thermal unit value by 0.29307107 to get watt hours.
- Enter the number of british thermal units you want to convert.
- The converter instantly shows the equivalent value in watt hours.
- Worked example: 15 BTU × 0.29307107 = 4.396066 Wh.
- Use the swap button to reverse the conversion (watt hour to british thermal unit).
About these units
British Thermal Unit (BTU)
- Definition
- A British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit.
- History
- It developed with steam engineering in Britain and the United States.
- Current use
- BTUs rate heating, air-conditioning, and appliance energy in the US.
Watt Hour (Wh)
- Definition
- A watt-hour (Wh) is the energy of one watt sustained for one hour, equal to 3,600 joules.
- History
- It arose with the electricity industry as a practical billing unit.
- Current use
- Watt-hours rate batteries and small energy stores.
Frequently asked questions
How many watt hours are in a british thermal unit?
There are 0.29307107 Wh in 1 BTU. To convert, multiply the number of british thermal units by 0.29307107.
How do I convert british thermal units to watt hours?
Multiply the british thermal unit value by 0.29307107 to get watt hours. For example, 10 BTU = 2.9307107 Wh.
Is this british thermal unit-to-watt hour converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert British Thermal Unit to other energy units
| Unit | 1 British Thermal Unit equals |
|---|---|
| Joule (J) | 1055.0558 J |
| Kilojoule (kJ) | 1.0550559 kJ |
| Calorie (cal) | 252.1644 cal |
| Kilocalorie (kcal) | 0.2521644 kcal |
| Watt Hour (Wh) | 0.29307107 Wh |
| Kilowatt Hour (kWh) | 0.00029307107 kWh |
| Electronvolt (eV) | 6.5851e+21 eV |
| Foot-Pound (ft·lb) | 778.16926 ft·lb |