Online calculator to convert calories to kilocalories (cal to kcal) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Energy units.
Conversion Calculator
Enter your value in the conversion calculator below.
Convert calories to kilocalories
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between calories and kilocalories.
What is a calorie (cal)?
A calorie (or thermochemical calorie) is a unit of energy in the International System of Units (SI). The symbol for calorie is cal. There are 1,000 calories in a kilocalorie. A calorie is measured as the quantity of heat required to raise the temperature of 1 gram of water by 1°C from a standard initial temperature at a pressure of 1 atmosphere. A calorie is also called a "small calorie" or "gram calorie".
What is a kilocalorie (kcal)?
A kilocalorie is a unit of energy in the International System of Units (SI). The symbol for kilocalorie is kcal. There are 0.001 kilocalories in a calorie. A kilocalorie is measured as the quantity of heat required to raise the temperature of 1 kilogram of water by 1°C from a standard initial temperature at a pressure of 1 atmosphere. A kilocalorie is also called a "large calorie" or "kilogram calorie".
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from calories to kilocalories is:
kilocalories = calories ÷ 1,000
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from calories to kilocalories (cal to kcal).
Calorie to Kilocalorie Conversion Example
Task: Convert 975,000 calories to kilocalories (show work) Formula: calories ÷ 1,000 = kilocalories Calculations: 975,000 calories ÷ 1,000 = 975 kilocalories Result: 975,000 calories is equal to 975 kilocalories
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from calories to kilocalories.
Calories to Kilocalories Conversion Chart
| calories (cal) | kilocalories (kcal) |
|---|---|
| 1 cal | 0.001 kcal |
| 2 cal | 0.002 kcal |
| 3 cal | 0.003 kcal |
| 4 cal | 0.004 kcal |
| 5 cal | 0.005 kcal |
| 6 cal | 0.006 kcal |
| 7 cal | 0.007 kcal |
| 8 cal | 0.008 kcal |
| 9 cal | 0.009 kcal |
| 10 cal | 0.01 kcal |
| 20 cal | 0.02 kcal |
| 30 cal | 0.03 kcal |
| 40 cal | 0.04 kcal |
| 50 cal | 0.05 kcal |
| 75 cal | 0.075 kcal |
| 100 cal | 0.1 kcal |
| 250 cal | 0.25 kcal |
| 500 cal | 0.5 kcal |
| 750 cal | 0.75 kcal |
| 1,000 cal | 1 kcal |
| 2,500 cal | 2.5 kcal |
| 5,000 cal | 5 kcal |
| 7,500 cal | 7.5 kcal |
| 10,000 cal | 10 kcal |
| 25,000 cal | 25 kcal |
| 50,000 cal | 50 kcal |
| 75,000 cal | 75 kcal |
| 100,000 cal | 100 kcal |
| 250,000 cal | 250 kcal |
Related Units
This table provides a summary of the Energy units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| calories (thermochemical) | cal | International System of Units (SI) |
| kilocalories | kcal | International System of Units (SI) |
| British Thermal Unit | BTU or Btu | Imperial System |
| joules | J | International System of Units (SI) |
| kilojoules | kJ | International System of Units (SI) |
| megajoules | MJ | International System of Units (SI) |
| gigajoules | GJ | International System of Units (SI) |
| terajoules | TJ | International System of Units (SI) |
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