Fuel Efficiency - Mass conversion
1 kilocalorie/kilogram (kcal/kg) equals 4.1868 kilojoule/kilogram (kJ/kg). Enter any value below to convert from kcal/kg to kJ/kg.
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1 kcal/kg = 4.1868 kJ/kg
| Unit | Value |
|---|---|
| Joule/kilogram J/kg | 4,186.8 |
| Kilojoule/kilogram kJ/kg | 4.1868 |
| Calorie/gram cal/g | 1 |
| Kilocalorie/kilogram kcal/kg | 1 |
| Btu/pound Btu/lb | 1.8 |
| Btu/kilogram Btu/kg | 3.9683051201 |
Formula
Use this relationship for a direct conversion:
2 kcal/kg = 8.3736 kJ/kg.
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Kilocalorie/kilogram (kcal/kg) | Kilojoule/kilogram (kJ/kg) |
|---|---|
| 0.01 | 0.041868 |
| 0.1 | 0.41868 |
| 1 | 4.1868 |
| 2 | 8.3736 |
| 5 | 20.934 |
| 10 | 41.868 |
| 25 | 104.67 |
| 50 | 209.34 |
| 100 | 418.68 |
| 1,000 | 4,186.8 |
From unit
Kilocalorie/kilogram (kcal/kg) is a unit of Fuel Efficiency - Mass. 1 kcal/kg = 4,186.8 J/kg
Symbol: kcal/kg
To unit
Kilojoule/kilogram (kJ/kg) is a metric prefix multiple of the Joule/kilogram (J/kg). 1 kJ/kg = 1,000 J/kg.
Symbol: kJ/kg
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete fuel efficiency - mass converterQuestions
Use the formula kJ/kg = kcal/kg x 4.1868. 1 kilocalorie/kilogram (kcal/kg) equals 4.1868 kilojoule/kilogram (kJ/kg).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
