What is the difference between a calorie and a Calorie?

A calorie (lowercase) is the amount of energy to raise 1g of water by 1°C. A food Calorie (uppercase) = 1 kilocalorie = 1,000 small calories.

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Energy Converter

Convert energy between joules, kilowatt-hours, calories, BTU & more.

From

1 kwh

3.600

Joule (J)

3.600.000

Kilojoule (kJ)

3.600

Calorie (cal)

860.420

Kilocalorie / kcal / Cal

860,42

Watt-hour (Wh)

1.000

BTU (British Thermal Unit)

3.412,1

Electronvolt (eV)

22.469.000.000.000.000.000.000.000

Foot-pound (ft·lb)

2.655.200

Energy Units by Context

Joules and kilojoules are the SI units for energy. Kilocalories appear on food labels. Kilowatt-hours measure electricity consumption. BTUs are used for heating and cooling in the US.

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