Convert Joules per Gram to Joules per Kilogram (J/g to J/kg)
1 joule per gram (J/g) = 1000 joules per kilogram (J/kg). 1 J/kg = 0.001 J/g. Example: 15 J/g = 15 × 1000 = 15000 J/kg.
Also searched as joules per gram to J/kg, joules per gram in J/kg, joules per gram into joules per kilogram, J/g to J/kg, J/g in joules per kilogram, J/g into joule per kilogram, joule per gram to joule per kilogram, J/g to joules per kilogram converter and how many joules per kilogram in a joule per gram.
1 J/g = 1000 J/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk joule per gram to joule per kilogram converter to paste a column from Excel.
How to Convert Joule per Gram to Joule per Kilogram
- 1 J/g = 1000 J/kg
- 1 J/kg = 0.001 J/g
- Example: convert 15 J/g to J/kg: 15 J/g = 15 × 1000 J/kg = 15000 J/kg
Formula
J/kg = J/g × 1000
Derivation from SI units:
- 1 J/g = 1 kJ/kg.
- Energy per unit mass: J/kg (also m²/s²).
Both units are defined exactly, so the factor is exact. Joule per Gram definition: joule per gram; Joule per Kilogram definition: joule per kilogram.
Worked examples
- A reading of 100 J/g converts to 100000 J/kg.
100 J/g × 1000 = 100000 J/kg - A value of 1000 J/g is 1000000 J/kg.
1000 J/g × 1000 = 1000000 J/kg
Joule per Gram to Joule per Kilogram conversion table
| Joules per Gram (J/g) | Joules per Kilogram (J/kg) |
|---|---|
| 1 J/g | 1000 J/kg |
| 10 J/g | 10000 J/kg |
| 50 J/g | 50000 J/kg |
| 100 J/g | 100000 J/kg |
| 200 J/g | 200000 J/kg |
| 334 J/g | 334000 J/kg |
| 1000 J/g | 1000000 J/kg |
| 2257 J/g | 2257000 J/kg |
| 17000 J/g | 17000000 J/kg |
| 37000 J/g | 37000000 J/kg |
Where it's used
Joules per Gram are used for DSC melting and crystallisation enthalpy, while joules per kilogram appear in specific enthalpy h and internal energy u. Both measure specific energy: enthalpy, latent heat and heating value per mass, so the conversion is a fixed factor.
Joule per Gram to other specific energy units
| Conversion | 1 J/g equals |
|---|---|
| joule per gram to joule per kilogram | 1000 J/kg |
| joule per gram to kilojoule per kilogram | 1 kJ/kg |
| joule per gram to megajoule per kilogram | 0.001 MJ/kg |
| joule per gram to BTU per pound | 0.4299226139 BTU/lb |
| joule per gram to kilocalorie per kilogram | 0.2388458966 kcal/kg |
| joule per gram to calorie per gram | 0.2388458966 cal/g |
| joule per gram to kilowatt-hour per kilogram | 0.0002777777778 kWh/kg |
Frequently asked questions
How many joules per kilogram are in 1 joule per gram?
1 J/g = 1000 J/kg.
How do I convert joules per gram to joules per kilogram?
Multiply the value in J/g by 1000. For example, 15 J/g × 1000 = 15000 J/kg.
Is the J/g to J/kg conversion exact?
Yes. Both units are defined exactly, and 1 J/g is exactly 1000 J/kg.
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). Convert Joules per Gram to Joules per Kilogram (J/g to J/kg). Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/joules-per-gram-to-joules-per-kilogram/
IEEE
Scientific Converters, "Convert Joules per Gram to Joules per Kilogram (J/g to J/kg)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/joules-per-gram-to-joules-per-kilogram/