NiftyRecipe Online energy conversion
kcal/BTU 3.965667 BTU/kcal 0.252164 BTU/cal 252.164401 MJ/cal 239005.736138 kJ/kcal 0.239006 kcal/cal 1000
cal / kJ

3 calories in kilojoule

0.012552 kilojoule

1 cal = 0.004184 kJ · factor

Swap units or open the reverse direction if you need kilojoule back to calorie (about 239.005736 calorie per kilojoule).

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

Formula: calorie to kilojoule

kJ = cal × 0.004184 (1 CAL = 0.004184 KJ)

Reference values: calorie → kilojoule
cal kJ
1 cal 0.004184 kJ
100 cal 0.4184 kJ
200 cal 0.8368 kJ
500 cal 2.092 kJ
1000 cal 4.184 kJ
2000 cal 8.368 kJ

All amounts for this pair

FAQ for cal → kJ
3 calories in kilojoule

3 calories is 0.012552 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 calorie = 0.004184 kilojoule, so 3 calories always maps to 0.012552 kilojoule until you change the input. The reverse figure is 1 kilojoule ≈ 239.005736 calorie.

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.