Convert kilojoule/kilogram to joule/kilogram

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Kilojoule/Kilogram

The kilojoule per kilogram (kJ/kg) is a practical unit of specific energy widely used in food science, combustion engineering, and thermodynamics. One kJ/kg equals 1000 J/kg. It is used to express calorific values of fuels and the enthalpy of phase changes such as vaporisation. 


Joule/Kilogram

The joule per kilogram (J/kg) is the SI unit of specific energy or fuel efficiency per unit mass. It represents the amount of energy released or consumed per kilogram of fuel. It is used in thermodynamics and fuel science to compare the energy content of different materials on a mass basis. 


Kilojoule/Kilogram to Joule/Kilogram conversion table
Kilojoule/KilogramJoule/KilogramJoule/KilogramKilojoule/Kilogram
1100010.001
2200020.002
3300030.003
5500050.005
1010000100.01
2020000200.02
2525000250.025
5050000500.05
1001000001000.1
2502500002500.25
5005000005000.5
10001E+0610001
How to convert Kilojoule/Kilogram to Joule/Kilogram

1 kJ/kg = 1000 J/kg. To convert any value, multiply it by 1000. For example, 25 kJ/kg = 25000 J/kg.

Frequently asked questions
How many J/kg are there in one kJ/kg?
One kJ/kg is equal to 1000 J/kg.
How do you convert Kilojoule/Kilogram to Joule/Kilogram?
Multiply the value in Kilojoule/Kilogram by 1000 to get the result in Joule/Kilogram.
How much is 25 kJ/kg in J/kg?
25 kJ/kg is equal to 25000 J/kg.
How do you convert Joule/Kilogram back to Kilojoule/Kilogram?
Divide by the same factor: multiply the value in Joule/Kilogram by 0.001 to get Kilojoule/Kilogram.

Most common fuel efficiency - mass unit conversions