NiftyRecipe Online energy conversion
BTU/kWh 0.000293 BTU/kcal 0.252164 kWh/kJ 3600 kJ/cal 239.005736 kWh/MJ 3.6 BTU/cal 252.164401
cal / kJ

90 calories in kilojoule

0.37656 kilojoule

1 cal = 0.004184 kJ · factor

Nutrition packaging often lists both kcal and kJ. This tool applies a fixed conversion ratio only.

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
90 calories in kilojoule

90 calories is 0.37656 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 90 calories always maps to 0.37656 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.