Calories to Joules Converter — Convert Energy Units

Calories to Joules Converter

Convert calories to joules and joules to calories with our energy unit converter. Calculate energy conversions quickly and accurately for science, nutrition, and engineering applications.

Step 1: Energy Conversion

Understanding Energy Units

1 small calorie (cal) equals 4.184 joules. 1 large calorie (Cal or kcal) equals 4184 joules. Large calories are used in nutrition to represent food energy.

Step 2: Conversion Details

2

About Energy Conversion

The calorie is a unit of energy defined as the amount of heat needed to raise the temperature of one gram of water by one degree Celsius. The joule is the SI unit of energy.

Conversion Results

Summary
Common Conversions
Energy Units

Conversion Result

418.4 J
100 cal = 418.4 joules
Input Value
100 cal
Output Value
418.4 J
Conversion Factor
4.184
Precision
2 decimals

Common Energy Conversions

Calories Joules Kilojoules Kilowatt-hours

Energy Unit Relationships

Conversion Formulas

1 calorie (cal) = 4.184 joules (J)

1 Calorie (kcal) = 4184 joules (J)

To convert calories to joules: Multiply the calorie value by 4.184. To convert joules to calories: Divide the joule value by 4.184.

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