# Calorie (IT) conversions

energy conversions » calorie (IT) conversionsThe online converter calculator on this page allows you to select the energy measurement unit you want to convert to starting from calories (IT) (cal). To make a conversion starting from a unit of energy other than calorie (IT), simply click on the "Reset" button.

## What is calorie (IT)?

### Definition:

The calorie (IT) is a unit of energy equal to 4.1868 joules (1 cal = 4.1868 J), the SI derived unit of energy. It is also equal to 0.0041868 kilojoules (kJ), or 4.1868x10-6 megajoules (MJ), or 4.1868x10-9 gigajoules (GJ), or 0.0039683207 British thermal units (IT) (BTU), or 0.0022046226 Celsius heat units (IT) (CHU), or 0.001163 watt hours (Wh) or 1.163x10-6 kilowatt hours (kWh).

The calorie is the energy required to increase the temperature of one gram of water by one degree Celsius (or 1.8 degrees Fahrenheit) at a constant pressure of one atmosphere.

The calorie definition varies as follows:

- The calorie (thermochemical) (cal) is equal to 4.184 joules (J)
- The calorie (IT) (cal) is equal to 4.1868 joules (J)
- The calorie (mean) (cal) is equal to about 4.19002 joules (J)
- The calorie (4 °C) (cal) is equal to about 4.2045 joules (J)
- The calorie (15 °C) (cal) is equal to 4.1855 joules (J)
- The calorie (20 °C) (cal) is equal to about 4.1819 joules (J)

*Notes:*

(i) The SI is an abbreviation for the International System of Units

(ii) The IT is an abbreviation for the International [Steam] Table

(iii) The food calorie - used in nutritional contexts only - is equal to 4.184 kilojoules or 1,000 thermochemical calories. The food calorie is also referred to as kilocalorie on the nutrition labels.

### Symbol:

cal

### Plural:

calories (IT)

Below you can find a comprehensive list with conversions from calories (IT) to other (metric, imperial, or customary) energy measurement units.