| Symbol: | cal15 |
| Category: | Energy |
| SI Equivalent: | 4.185 J |
| Dimension: | ML2T-2 |
| Notes | |
| Heat unit representing the energy needed to raise the temperature of 1 gram of air-free water from 14.5°C to 15.5°C at the constant pressure of 1 atm. | |
| Energy | ||
| Symbol | Unit Name | |
| 6.83824×10-10 | bboe | barrel oil equivalent |
| 3.96661×10-3 | Btu (IT) | British thermal unit (IT) |
| 3.96356×10-3 | Btu (mean) | British thermal unit (mean) |
| 3.96927×10-3 | Btu (therm.) | British thermal unit (thermochemical) |
| 1.0012×10-3 | Cal, kcal | Calorie (diet kilocalorie) |
| 0.998802 | calmean | calorie (mean) |
| 1.00024 | cal (therm.) | calorie (thermochemical) |
| 2.61207×1019 | eV | electronvolt |
| 4.185×107 | erg | erg |
| 3.0867 | ft-lbf | foot-pound force |
| 99.3116 | ft-pdl | foot-poundal |
| 1.55894×10-6 | Hp-h | horsepower (550ft-lbf/s)-hour |
| 4.185 | J | joule |
| 9.99881×10-4 | kcal15 | kilocalorie (15°C) |
| 9.95362×10-4 | kcal4 | kilocalorie (4°C) |
| 4.185×10-3 | kJ | kilojoule |
| 1.0012×10-12 | kt (TNT) | kiloton TNT equivalent |
| 1.1625×10-6 | kWh | kilowatt-hour |
| 2.61207×1013 | MeV | megaelectronvolt |
| 4.185×10-6 | MJ | megajoule |
| 1.0012×10-15 | Mt (TNT) | megaton TNT equivalent |
| 1.42882×10-10 | tce | tce (tonne coal equivalent) |
| 3.96756×10-8 | therm (US) | |
| 1.0012×10-9 | ton (TNT) | ton TNT equivalent |
| 1.1625×10-3 | Wh | watt hour |















