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Kilocalorie (food calorie) to Kilojoule (kcal → kJ)

Convert kilocalorie (food calorie) to kilojoule instantly. The conversion factor below is exact by international definition.

Realtime·energy·metric
Exact
kcal
× 4.184
kJ
4.184
Precision [auto]
6

📐kcal to kJ formulaExact

kJ = kcal × 4.184
Inverse: kcal = kJ × 0.239005736138

Worked example: 1 kcal = 4.184 kJ

ℹ️About these units

Kilocalorie (food calorie) (kcal)
Nutrition labels in the US and worldwide as "Calorie".
Kilojoule (kJ)
Food energy labels in many countries.

📊Reference table: kcal → kJ

Kilocalorie (food calorie) (kcal)Kilojoule (kJ)
14.184
28.368
520.92
1041.84
1562.76
2083.68
25104.6
50209.2
100418.4
2501,046
5002,092
7503,138
1,0004,184

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: kJ → kcalkcal → Jkcal → MJkcal → GJkcal → calkcal → Whkcal → kWhkcal → MWhkcal → BTU

🔌API & widget

GET https://convertnavi.com/api/v1/convert?value=10&from=kilocalorie&to=kilojoule
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