NiftyRecipe Online energy conversion
kcal/MJ 0.004184 kcal/cal 1000 BTU/kJ 1.055056 MJ/kJ 1000 kWh/kcal 860.42065 MJ/kWh 0.277778
J / kcal

20 joules in kilocalorie

0.00478 kilocalorie

1 J = 0.000239 kcal · factor

20 joules equals 0.00478 kilocalorie. Factor: 1 joule = 0.000239 kilocalorie.

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Common values

kilocalorie to joule 1 joule in kilocalorie

Same amount, other units

20 joules → 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
20 joules in kilocalorie

NiftyRecipe converts 20 joules to 0.00478 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 0.00478 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.