40 kilocalories in kilojoule

167.36 kilojoule

1 kcal = 4.184 kJ · factor

Swap units or open the reverse direction if you need kilojoule back to kilocalorie (about 0.239006 kilocalorie per kilojoule).

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

40 kilocalories → cal 40 kilocalories → kWh 40 kilocalories → BTU 40 kilocalories → MJ

Related converters

kcal → cal kcal → kWh kcal → BTU kcal → MJ kcal → J kcal → Wh

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

40 kilocalories in kilojoule

40 kilocalories is 167.36 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 40 kilocalories always maps to 167.36 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.