Calorie per Gram (cal/g)
Calories per gram give latent heats (water: 80 cal/g to melt, 540 cal/g to boil) and fuel values in CGS units.
Symbol: cal/g
Quantity: specific energy: enthalpy, latent heat and heating value per mass
SI relation: 1 cal/g = 4186.8 J/kg (exact)
Derivation: 1 cal_IT/g = 4186.8 J/kg = 1 kcal/kg.
Exact: yes, by definition
Reference conditions. International Table calorie (4.1868 J).
Same quantity as kilocalorie per kilogram (kcal/kg) : the factor between them is exactly 1.
Typical uses
- Latent heat problems in CGS units
- Bomb calorimeter results
Convert calories per gram to other units
| Conversion | 1 cal/g equals | Reverse |
|---|---|---|
| calorie per gram to kilojoule per kilogram | 4.1868 kJ/kg | kilojoule per kilogram to calorie per gram |
| calorie per gram to megajoule per kilogram | 0.0041868 MJ/kg | megajoule per kilogram to calorie per gram |
| calorie per gram to BTU per pound | 1.8 BTU/lb | BTU per pound to calorie per gram |
| calorie per gram to kilocalorie per kilogram | 1 kcal/kg | kilocalorie per kilogram to calorie per gram |
| calorie per gram to joule per kilogram | 4186.8 J/kg | joule per kilogram to calorie per gram |
| calorie per gram to kilowatt-hour per kilogram | 0.001163 kWh/kg | kilowatt-hour per kilogram to calorie per gram |
| calorie per gram to joule per gram | 4.1868 J/g | joule per gram to calorie per gram |
Open the Specific Enthalpy Converter (kJ/kg, BTU/lb, kcal/kg) to convert any value between all units.
Sources
- 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, "calorie_IT per gram".
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). Calorie per Gram (cal/g). Retrieved October 29, 2026, from https://scientificconverters.com/units/calorie-per-gram/
IEEE
Scientific Converters, "Calorie per Gram (cal/g)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/calorie-per-gram/