Joules to Calories Converter

Convert joules to calories. Includes both small calories and kilocalories (food calories).

Joules (J)

4,184 joules =

1,000 cal

or 1 kcal (food calories)

All Conversions

1,000

Calories (cal)

Kilocalories (kcal)

4.184

Kilojoules (kJ)

3.9657

BTU

calories = joules ÷ 4.184

4,184 ÷ 4.184 = 1,000 cal

Small calorie (cal)

Energy to raise 1 gram of water by 1°C. Used in science.

Large calorie (Cal or kcal)

1000 small calories. Used in nutrition (food calories).

1 J

= 0.239 cal

4.184 J

= 1 cal

4184 J

= 1 kcal

1 kJ

= 0.239 kcal

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