NiftyRecipe Online energy conversion
kcal/cal 1000 BTU/kWh 0.000293 kJ/BTU 0.947817 BTU/kcal 0.252164 MJ/kJ 1000 kJ/kWh 0.000278
kcal / kJ

100 kilocalories in kilojoule

418.4 kilojoule

1 kcal = 4.184 kJ · factor

100 kilocalories equals 418.4 kilojoule-handy when reading a food label or logging a meal. Factor: 1 kilocalorie = 4.184 kilojoule.

Enter a value and click Calculate - opens the page with the new result

Common values

kilojoule to kilocalorie 1 kilocalorie in kilojoule 2 kilocalories in kilojoule 3 kilocalories in kilojoule 4 kilocalories in kilojoule 5 kilocalories in kilojoule 6 kilocalories in kilojoule 8 kilocalories in kilojoule 10 kilocalories in kilojoule 12 kilocalories in kilojoule 15 kilocalories in kilojoule

Same amount, other units

100 kilocalories → cal 100 kilocalories → kWh 100 kilocalories → BTU

Related converters

kcal → cal kcal → kWh kcal → BTU
Formula: kilocalorie to kilojoule

kJ = kcal × 4.184 (1 KCAL = 4.184 KJ)

Reference values: kilocalorie → kilojoule
kcal kJ
1 kcal 4.184 kJ
100 kcal 418.4 kJ
200 kcal 836.8 kJ
500 kcal 2092 kJ
1000 kcal 4184 kJ
2000 kcal 8368 kJ

All amounts for this pair

FAQ for kcal → kJ
100 kilocalories in kilojoule

100 kilocalories is 418.4 kilojoule using the standard food-energy factor on NiftyRecipe.

Package labels, recipe macros and fitness apps often jump between kilocalories and smaller calorie units (or kilojoules). Here the ratio stays constant: 1 kilocalorie = 4.184 kilojoule, so 100 kilocalories always maps to 418.4 kilojoule until you change the input. The reverse figure is 1 kilojoule ≈ 0.239006 kilocalorie.

Use the field above to try another portion size, scale a recipe, or match two apps that print different units. Everything on this page stays inside nutrition-style energy units-no length, temperature or other measures mixed in.