Online calculator to convert joules to calories (J to cal) 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 J to calories
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 joules and calories.
What is a joule (J)?
A joule is a unit of energy in the International System of Units (SI). The symbol for joule is J. There are 4.184 joules in a calorie.
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 0.23900574 calories in a joule. 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".
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 J to calories is:
calories = J ÷ 4.184
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from joules to calories (J to cal).
Joule to Calorie Conversion Example
Task: Convert 8,368 joules to calories (show work) Formula: J ÷ 4.184 = calories Calculations: 8,368 J ÷ 4.184 = 2,000 calories Result: 8,368 J is equal to 2,000 calories
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from joules to calories.
Joules to Calories Conversion Chart
| joules (J) | calories (cal) |
|---|---|
| 1 J | 0.23900574 cal |
| 2 J | 0.47801147 cal |
| 3 J | 0.71701721 cal |
| 4 J | 0.95602294 cal |
| 5 J | 1.19502868 cal |
| 6 J | 1.43403442 cal |
| 7 J | 1.67304015 cal |
| 8 J | 1.91204589 cal |
| 9 J | 2.15105163 cal |
| 10 J | 2.39005736 cal |
| 20 J | 4.78011472 cal |
| 30 J | 7.17017208 cal |
| 40 J | 9.56022945 cal |
| 50 J | 11.95028681 cal |
| 75 J | 17.92543021 cal |
| 100 J | 23.90057361 cal |
| 250 J | 59.75143403 cal |
| 500 J | 119.50286807 cal |
| 750 J | 179.2543021 cal |
| 1,000 J | 239.00573614 cal |
| 2,500 J | 597.51434034 cal |
| 5,000 J | 1,195.02868069 cal |
| 7,500 J | 1,792.54302103 cal |
| 10,000 J | 2,390.05736138 cal |
| 25,000 J | 5,975.14340344 cal |
| 50,000 J | 11,950.28680688 cal |
| 75,000 J | 17,925.43021033 cal |
| 100,000 J | 23,900.57361377 cal |
| 250,000 J | 59,751.43403442 cal |
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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