Watt-hours (W·h) to Electronvolts (eV) Conversion
Watt-hours
The watt-hour (W·h) is a unit of energy equal to exactly 3,600 joules, defined as the energy consumed by a one-watt device operating for one hour. It is used in electrical engineering and consumer electronics for expressing battery capacities: a smartphone battery typically holds 10–20 Wh. In aviation, aircraft battery capacities are specified in watt-hours for international transport regulations (lithium batteries above 100 Wh face restrictions).
Electronvolts
The electronvolt (eV) is a unit of energy equal to exactly 1.602176634 × 10⁻¹⁹ joules, defined as the kinetic energy gained by a single electron accelerated through a potential difference of one volt. It is the standard unit in particle physics, atomic physics, and solid-state physics. Visible light photons carry 1.8–3.1 eV of energy; X-ray photons carry 100 eV to 100 keV; the proton beams at CERN's LHC reach 6.5 teraelectronvolts (TeV).
| Watt-hours (W·h) | Electronvolts (eV) |
|---|---|
| 0.1 W·h | 2,246,943,266,805,875,000,000.00 eV |
| 1 W·h | 22,469,432,668,058,747,000,000.00 eV |
| 2 W·h | 44,938,865,336,117,495,000,000.00 eV |
| 3 W·h | 67,408,298,004,176,250,000,000.00 eV |
| 5 W·h | 112,347,163,340,293,730,000,000.00 eV |
| 10 W·h | 224,694,326,680,587,470,000,000.00 eV |
| 20 W·h | 449,388,653,361,174,900,000,000.00 eV |
| 30 W·h | 674,082,980,041,762,400,000,000.00 eV |
| 50 W·h | 1,123,471,633,402,937,300,000,000.00 eV |
| 100 W·h | 2,246,943,266,805,874,700,000,000.00 eV |
| 1000 W·h | 22,469,432,668,058,746,000,000,000.00 eV |
Frequently Asked Questions (FAQ)
How many electronvolts are in 1 watt-hours?
1 watt-hours (W·h) is exactly 22,469,432,668,058,747,404,288 electronvolts (eV).
How do I convert watt-hours to electronvolts?
Multiply the value in watt-hours by 22,469,432,668,058,747,404,288 to get the result in electronvolts. Or use the converter above — type any number and see the result instantly.