Joule per Gram Kelvin (J/(g·K))
Joules per gram kelvin (or per gram degree Celsius) are the chemistry-class unit of specific heat: water is 4.18 J/(g·°C). The number equals kJ/(kg·K).
Symbol: J/(g·K) (ASCII: J/(g K))
Quantity: specific heat capacity
SI relation: 1 J/(g·K) = 1000 J/(kg·K) (exact)
Derivation: 1 J/(g·K) = 1000 J/(kg·K) = 1 kJ/(kg·K).
Exact: yes, by definition
Same quantity as kilojoule per kilogram kelvin (kJ/(kg·K)) : the factor between them is exactly 1.
Typical uses
- Calorimetry in chemistry
- School and college specific-heat problems
Convert joules per gram kelvin to other units
| Conversion | 1 J/(g·K) equals | Reverse |
|---|---|---|
| joule per gram kelvin to joule per kilogram kelvin | 1000 J/(kg·K) | joule per kilogram kelvin to joule per gram kelvin |
| joule per gram kelvin to kilojoule per kilogram kelvin | 1 kJ/(kg·K) | kilojoule per kilogram kelvin to joule per gram kelvin |
| joule per gram kelvin to calorie per gram degree Celsius | 0.2388458966 cal/(g·°C) | calorie per gram degree Celsius to joule per gram kelvin |
| joule per gram kelvin to BTU per pound degree Fahrenheit | 0.2388458966 BTU/(lb·°F) | BTU per pound degree Fahrenheit to joule per gram kelvin |
| joule per gram kelvin to kilocalorie per kilogram degree Celsius | 0.2388458966 kcal/(kg·°C) | kilocalorie per kilogram degree Celsius to joule per gram kelvin |
Open the Specific Heat Converter (kJ/kg·K, BTU/lb·°F) to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
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). Joule per Gram Kelvin (J/(g·K)). Retrieved October 29, 2026, from https://scientificconverters.com/units/joule-per-gram-kelvin/
IEEE
Scientific Converters, "Joule per Gram Kelvin (J/(g·K))," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/joule-per-gram-kelvin/