Units of Energy
7 units of energy in the database, across 5 measurement systems, each with its exact or best-known SI value.
| Unit | Symbol | Quantity | Value in SI |
|---|---|---|---|
| Joule | J | Energy | 1 J = 1 N·m = 1 kg·m²·s⁻² |
| Kilowatt-hour | kWh | Energy | 1 kWh = 3,600,000 J (exact) |
| British thermal unit | BTU | Energy | ≈ 1055.056 J (International Table) |
| Erg | erg | Energy | 10⁻⁷ J (exact) |
| Electronvolt | eV | Energy | 1.602176634 × 10⁻¹⁹ J (exact) |
| Thermochemical calorie | cal | Energy | 4.184 J (exact) |
| Ton of TNT | tTNT | Energy | 4.184 × 10⁹ J (exact by convention) |