Kilojoules to kilocalories conversion

Kilojoules (kJ) to kilocalories (kcal) energy conversion calculator and how to convert.

Kilojoules to kilocalories conversion calculator

Enter the energy in kilojoules and press the Convert button:

Enter energy in kilojoules:		kJ
Select calorie unit type:	Thermochemical/food calorie International calorie 15°C calorie 20°C calorie
Energy result in kilocalories:

kcal to kJ conversion ►

Kilojoules to Kilocalories

One kilojoule is equal to 1,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The kilojoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "kilo" is the prefix for 10³. Kilojoules can be abbreviated as kJ; for example, 1 kilojoule can be written as 1 kJ.

One kilocalorie, is equal to the heat needed to raise the temperature of one kilogram of water from 14.5 to 15.5 degrees Celsius.

Kilocalories can be abbreviated as kcal; for example, 1 kilocalorie can be written as 1 kcal.

When being used to measure nutrition or metabolic processes, the large calorie is used, which is equal to one kilocalorie.

How to convert from kilojoules to kcal

Kilojoules to thermochemical / food kilocalories

1 kcal_th = 4.184 kJ

The energy in kilocalories E_(kcal-th) is equal to the energy in kilojoules E_(kJ) divided by 4.184:

E_(kcal) = E_(kJ) / 4.184

Example

Convert 5 kilojoules to kilocalories.

E_(kcal) = 5 kJ / 4.184 = 1.195 kcal

Kilojoules to international kilocalories

1 kcal_IT = 4.1868 kJ

The energy in international kilocalories E_(kcal-IT) is equal to the energy in kilojoules E_(kJ) divided by 4.1868:

E_(kcal-IT) = E_(kJ) / 4.1868

Example

Convert 5 kilojoules to kilocalories.

E_(kcal-IT) = 5 kJ / 4.1868 = 1.194 kcal_IT

Kilojoules to 15°C kilocalories

1 kcal₁₅ = 4.1855 kJ

The energy in 15°C kilocalories E_(kcal15) is equal to the energy in kilojoules E_(kJ) divided by 4.1855:

E_(kcal15) = E_(kJ) / 4.1855

Example

Convert 5 kilojoules to kilocalories.

E_(kcal15) = 5 kJ / 4.1855 = 1.195 kcal₁₅

Kilojoules to 20°C kilocalories

1 kcal₂₀ = 4.182 kJ

The energy in 20°C kilocalories E_(kcal20) is equal to the energy in kilojoules E_(kJ) divided by 4.182:

E_(kcal20) = E_(kJ) / 4.182

Example

Convert 5 kilojoules to kilocalories.

E_(kcal20) = 5 kJ / 4.182 = 1.196 kcal₂₀

 

kcal to kJ conversion ►