Kilocalories (thermochemical) to Kilojoules – kilocalorie (thermochemical) to kilojoule Converter

1 kcal = 4.184 kJ

kilocalories (thermochemical) (kcal)

kilojoules (kJ)4.184

Formula

kJ = kcal × 4.184

Kilocalories (thermochemical) to kilojoules conversion table

kilocalories (thermochemical) (kcal)	kilojoules (kJ)
0.25 kcal	1.046 kJ
0.5 kcal	2.092 kJ
1 kcal	4.184 kJ
2 kcal	8.368 kJ
5 kcal	20.92 kJ
10 kcal	41.84 kJ
20 kcal	83.68 kJ
50 kcal	209.2 kJ
100 kcal	418.4 kJ
200 kcal	836.8 kJ
500 kcal	2092 kJ
1000 kcal	4184 kJ
2500 kcal	10460 kJ
5000 kcal	20920 kJ
10000 kcal	41840 kJ

Kilocalories (thermochemical) and kilojoules are both energy units. One kilocalorie (thermochemical) equals 4.184 kilojoules; enter any value above for an instant result, or use the table for common conversions.

Sanity-check examples

1 kcal = 4.184 kJ
10 kcal = 41.84 kJ
2.5 kcal = 10.46 kJ

Common pitfalls and look-alike units

The "Calorie" on food labels and in fitness is the kilocalorie (kcal): 1 kcal = 4184 J, and the small calorie (cal) is one thousandth of it. This page uses the thermochemical calorie (1 cal = 4.184 J); the International Steam Table calorie is about 4.1868 J, so values differ slightly. The "degree" (度) on a Chinese electricity bill is one kilowatt-hour, and 1 kWh = 3600 kJ.

Frequently asked questions

How many kilojoules are in a kilocalorie (thermochemical)?

1 kilocalorie (thermochemical) (kcal) equals 4.184 kilojoule (kJ).

How do I convert kilocalories (thermochemical) to kilojoules?

Multiply the kilocalorie (thermochemical) value by 4.184 to get kilojoule — for example, 2 kilocalories (thermochemical) = 8.368 kilojoule.

How do I convert kilojoules back to kilocalories (thermochemical)?

1 kilojoule is approximately 0.239006 kilocalorie (thermochemical). Use the swap button or the reverse conversion page linked on this page.

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