Home Conversions Energy Calories to Joules

Energy

Calories to Joules

Convert calories (cal) to joules (J). Type a value below to see the result update instantly. Reference table and formula included.

Calculator

cal
J

1 cal = 4.184 J

Calories to Joules Conversion Table

Common values, ready to copy:

caloriesjoules
1 cal4.184 J
2 cal8.368 J
5 cal20.92 J
10 cal41.84 J
25 cal104.6 J
50 cal209.2 J
100 cal418.4 J
1,000 cal4184 J
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Formula

joules = calories × 4.184

Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.

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