Unit Converters

Kilojoules to Kilocalories Converter

Type a value in kilojoules to get it in kilocalories, and see the reverse conversion.

By TheCalcTools Updated Formula checked and tested

Your numbers

Your results

Converted value
Kilocalories (kcal)
—
1 kJ in kcal
—
Your number read as kcal, in kJ
—
Kilowatt-hours (kWh)
—

Kilojoules to Kilocalories Converter by TheCalcTools

How the Kilojoules to Kilocalories Converter works

Food labels in Australia and Europe show energy in kilojoules; one food Calorie (kcal) is 4.184 kJ.

To convert kilojoules to kilocalories, multiply by 0.2390057361. The calculator shows the result to 6 significant figures; the conversion factor itself is exact for the thermochemical calorie (4.184 J).

Quick estimate in your head: divide kJ by 4.2.

The formula

kcal = kJ × 0.2390057361kJ = kcal ÷ 0.2390057361

Worked example

Using the default values shown in the calculator:

Value in kilojoules (kJ)1000
  1. 1,000 kJ × 0.2390057361 = 239.006 kcal.

Result:

Kilocalories (kcal)239.006
1 kJ in kcal0.239006
Your number read as kcal, in kJ4184
Kilowatt-hours (kWh)0.277778

Conversion table

kJkcal
100 kJ23.9006 kcal
250 kJ59.7514 kcal
500 kJ119.503 kcal
1,000 kJ239.006 kcal
2,000 kJ478.011 kcal
4,184 kJ1,000 kcal
8,700 kJ2,079.35 kcal

Frequently asked questions

What is 1 kilojoule in kilocalories?

1 kilojoule (kJ) equals 0.239006 kcal.

Sources and further reading

Kilocalories to Kilojoules ConverterType a value in kilocalories to get it in kilojoules, and see the reverse conversion Energy ConverterElectricity bills, food labels and heating energy in one tool TDEE CalculatorHow many calories do you burn in a day? Get maintenance, cutting and bulking targets BTU to Kilowatt-hours ConverterType a value in btu to get it in kilowatt-hours, and see the reverse conversion

More in Unit Converters · All calculators

This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.