Convert Electronvolts to Kilowatt-hours
1 electronvolt (eV) equals 4.45049065 × 10⁻²⁶ kilowatt-hours (kWh).
1 eV = 4.45049065e-26 kWh
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk electronvolt to kilowatt-hour converter to paste a column from Excel.
How to Convert Electronvolt to Kilowatt-hour
- 1 eV = 4.45049065 × 10⁻²⁶ kWh
- 1 kWh = 2.246943267 × 10²⁵ eV
- Example: convert 15 eV to kWh: 15 eV = 15 × 4.45049065 × 10⁻²⁶ kWh = 6.675735975 × 10⁻²⁵ kWh
Formula
kWh = eV × 4.45049065 × 10⁻²⁶
or kWh = eV ÷ 2.246943266806 × 10²⁵
Derivation from SI units:
- 1 eV = e × 1 V = 1.602176634 × 10⁻¹⁹ J (exact since 2019)
- 1 kWh = 1000 W × 3600 s = 3.6 × 10⁶ J
- 1 eV = 1.602176634 × 10⁻¹⁹ J ÷ 3600000 J per kWh = 4.45049065 × 10⁻²⁶ kWh
Both units are defined exactly, so the factor is exact. Electronvolt definition: electronvolt; Kilowatt-hour definition: kilowatt-hour.
Worked examples
- A reading of 1.5 eV converts to 6.675735975 × 10⁻²⁶ kWh.
1.5 eV × 4.45049065 × 10⁻²⁶ = 6.675735975 × 10⁻²⁶ kWh - A value of 13.6 eV is 6.052667284 × 10⁻²⁵ kWh.
13.6 eV × 4.45049065 × 10⁻²⁶ = 6.052667284 × 10⁻²⁵ kWh
Electronvolt to Kilowatt-hour conversion table
| Electronvolts (eV) | Kilowatt-hours (kWh) |
|---|---|
| 0.025 eV | 1.112622663 × 10⁻²⁷ kWh |
| 1 eV | 4.45049065 × 10⁻²⁶ kWh |
| 1.12 eV | 4.984549528 × 10⁻²⁶ kWh |
| 1.5 eV | 6.675735975 × 10⁻²⁶ kWh |
| 2 eV | 8.9009813 × 10⁻²⁶ kWh |
| 3 eV | 1.335147195 × 10⁻²⁵ kWh |
| 10 eV | 4.45049065 × 10⁻²⁵ kWh |
| 13.6 eV | 6.052667284 × 10⁻²⁵ kWh |
| 100 eV | 4.45049065 × 10⁻²⁴ kWh |
| 1000 eV | 4.45049065 × 10⁻²³ kWh |
| 1000000 eV | 4.45049065 × 10⁻²⁰ kWh |
Where it's used
Electronvolts are used for atomic and particle physics, while kilowatt-hours appear in electricity bills and meters. Both measure energy, work and heat, so the conversion is a fixed factor.
Electronvolt to other energy units
| Conversion | 1 eV equals |
|---|---|
| electronvolt to joule | 1.602176634 × 10⁻¹⁹ J |
| electronvolt to kilojoule | 1.602176634 × 10⁻²² kJ |
| electronvolt to megajoule | 1.602176634 × 10⁻²⁵ MJ |
| electronvolt to calorie | 3.829294058 × 10⁻²⁰ cal |
| electronvolt to kilocalorie | 3.829294058 × 10⁻²³ kcal |
| electronvolt to watt-hour | 4.45049065 × 10⁻²³ Wh |
| electronvolt to kilowatt-hour | 4.45049065 × 10⁻²⁶ kWh |
| electronvolt to BTU | 1.518570443 × 10⁻²² BTU |
| electronvolt to therm | 1.518933028 × 10⁻²⁷ thm |
| electronvolt to foot-pound | 1.181704842 × 10⁻¹⁹ ft·lbf |
| electronvolt to erg | 1.602176634 × 10⁻¹² erg |
Frequently asked questions
How many kilowatt-hours are in 1 electronvolt?
1 eV = 4.45049065 × 10⁻²⁶ kWh.
How do I convert electronvolts to kilowatt-hours?
Multiply the value in eV by 4.45049065 × 10⁻²⁶, or divide it by 2.246943267 × 10²⁵. For example, 15 eV × 4.45049065 × 10⁻²⁶ = 6.675735975 × 10⁻²⁵ kWh.
Is the eV to kWh conversion exact?
Yes. Both units are defined exactly, and 1 eV is exactly 4.45049065 × 10⁻²⁶ kWh.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 and the fixed elementary charge e.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "kilowatt hour (kW·h)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Electronvolts to Kilowatt-hours. Retrieved October 17, 2026, from https://scientificconverters.com/energy/electronvolts-to-kilowatt-hours/
IEEE
Scientific Converters, "Convert Electronvolts to Kilowatt-hours," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/energy/electronvolts-to-kilowatt-hours/