NiftyRecipe Online energy conversion
cal/kJ 0.004184 cal/BTU 0.003966 kWh/BTU 3412.141633 MJ/kJ 1000 kWh/kcal 860.42065 kJ/BTU 0.947817
J / kcal

1 joule in kilocalorie

0.000239 kilocalorie

1 J = 0.000239 kcal · 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

kilocalorie to joule

Same amount, other units

1 joule → kJ
Formula: joule to kilocalorie

kcal = J × 0.000239 (1 J = 0.000239 KCAL)

Reference values: joule → kilocalorie
J kcal
1 J 0.000239 kcal
100 J 0.023901 kcal
200 J 0.047801 kcal
500 J 0.119503 kcal
1000 J 0.239006 kcal
2000 J 0.478011 kcal

All amounts for this pair

FAQ for J → kcal
1 joule in kilocalorie

NiftyRecipe converts 1 joule to 0.000239 kilocalorie with a fixed SI-linked factor.

Kilojoules and megajoules describe energy on a scientific scale. The ratio applied here is 1 joule = 0.000239 kilocalorie, so this amount is 0.000239 kilocalorie. Reverse check: 1 kilocalorie ≈ 4184 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.