Convert British Thermal Unit to Electronvolt
Use this free converter to change british thermal units (BTU) into electronvolts (eV). British thermal unit and electronvolt both measure energy. As a quick reference, 1 BTU equals 6.5851e+21 eV, and 1 eV equals 1.5186e-22 BTU.
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Electronvolt (eV)
6.5851e+21
1 BTU = 6.5851e+21 eV
Energy conversion table
| British Thermal Unit | Electronvolt |
|---|---|
| 0.01 | 6.5851e+19 |
| 0.1 | 6.5851e+20 |
| 0.5 | 3.2926e+21 |
| 1 | 6.5851e+21 |
| 2 | 1.3170e+22 |
| 3 | 1.9755e+22 |
| 5 | 3.2926e+22 |
| 10 | 6.5851e+22 |
| 20 | 1.3170e+23 |
| 25 | 1.6463e+23 |
| 50 | 3.2926e+23 |
| 100 | 6.5851e+23 |
| 1,000 | 6.5851e+24 |
How to convert British Thermal Unit to Electronvolt
Multiply the british thermal unit value by 6.5851e+21 to get electronvolts.
- Enter the number of british thermal units you want to convert.
- The converter instantly shows the equivalent value in electronvolts.
- Worked example: 15 BTU × 6.5851e+21 = 9.8777e+22 eV.
- Use the swap button to reverse the conversion (electronvolt 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.
Electronvolt (eV)
- Definition
- An electronvolt (eV) is the energy gained by an electron moving through a one-volt potential, a tiny amount of energy.
- History
- It became standard in atomic and particle physics in the 20th century.
- Current use
- Electronvolts measure energies of particles, photons, and chemical bonds.
Frequently asked questions
How many electronvolts are in a british thermal unit?
There are 6.5851e+21 eV in 1 BTU. To convert, multiply the number of british thermal units by 6.5851e+21.
How do I convert british thermal units to electronvolts?
Multiply the british thermal unit value by 6.5851e+21 to get electronvolts. For example, 10 BTU = 6.5851e+22 eV.
Is this british thermal unit-to-electronvolt 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 |