NiftyRecipe Online energy conversion
kJ/MJ 0.001 kcal/BTU 3.965667 cal/BTU 0.003966 MJ/kcal 239.005736 BTU/kWh 0.000293 kJ/BTU 0.947817
J / cal

90 joules in calorie

21.510516 calorie

1 J = 0.239006 cal · factor

Kilojoules and megajoules sit on the SI energy scale. This page is pure unit conversion-not a meal planner.

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

Common values

calorie to joule 1 joule in calorie 2 joules in calorie 3 joules in calorie 4 joules in calorie 5 joules in calorie 6 joules in calorie 8 joules in calorie 10 joules in calorie 12 joules in calorie 15 joules in calorie

Related converters

J → kcal J → kJ
Formula: joule to calorie

cal = J × 0.239006 (1 J = 0.239006 CAL)

Reference values: joule → calorie
J cal
1 J 0.239006 cal
100 J 23.900574 cal
200 J 47.801147 cal
500 J 119.502868 cal
1000 J 239.005736 cal
2000 J 478.011472 cal

All amounts for this pair

FAQ for J → cal
90 joules in calorie

NiftyRecipe converts 90 joules to 21.510516 calorie with a fixed SI-linked factor.

Kilojoules and megajoules describe energy on a scientific scale. The ratio applied here is 1 joule = 0.239006 calorie, so this amount is 21.510516 calorie. Reverse check: 1 calorie ≈ 4.184 joule. That helps when a lab notebook or spreadsheet only lists one column.

Change the value in the calculator for homework, datasheets or rough process estimates. The wording stays technical on purpose so these pages read differently from food-label articles on the same site.