Calorie to Joule Converter (cal to J)

How to Convert Calorie to Joule

Formula: Joule = Calorie × 4.184

Example: 1 cal = 4.184 J

You can also use the interactive converter above. Simply enter any Calorie value and the equivalent Joule value will appear instantly. Click the ⇄ button to reverse the conversion.

Here is a closer look at what Calorie and Joule are used for, plus answers to the questions people ask most about this conversion.

Step-by-step example — Convert 1000 cal to J:

What is Calorie and Joule?

A Calorie (cal) is a small energy unit originally defined as the heat needed to raise one gram of water by one degree Celsius.

A Joule (J) is the SI unit of energy, used as the scientific standard for measuring work and heat.

Real World Uses of Calorie to Joule Conversion

• Calorie: Commonly used for used in scientific calorimetry experiments.
• Joule: Commonly used for measuring electrical and mechanical energy in engineering.
• Calorie: Commonly used in older nutrition science before kilocalories became the everyday standard.
• Joule: Commonly used in scientific formulas involving force, heat and electrical energy.

Frequently Asked Questions

What is the formula to convert Calorie to Joule?

The formula is: Joule = Calorie x 4.184. Multiply any Calorie value by 4.184 to get the equivalent in Joule.

What is 1 Calorie in Joule?

1 cal = 4.184 J.

How many Calorie are in 1 Joule?

1 J = 0.239005736137667 cal.

Is Calorie bigger or smaller than Joule?

Calorie is bigger than Joule. 1 Calorie = 4.184 J.

What is 500 cal in J?

500 cal = 2,092 J.

What is 5000 J in cal?

5000 J = 1,195.028681 cal.

How is 1 calorie defined?

1 calorie is defined as the heat needed to raise the temperature of 1 gram of water by 1°C.