Joule to Kilocalorie Converter (J to kcal)

How to Convert Joule to Kilocalorie

Formula: Kilocalorie = Joule × 0.00023901

Example: 1 J = 0.00023901 kcal

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

To get more out of this conversion, it helps to know where Joule and Kilocalorie actually show up in daily life, plus the quick facts people usually search for.

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

What is Joule and Kilocalorie?

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

A Kilocalorie (kcal) equals 1,000 calories and is the actual unit behind the 'Calorie' shown on food nutrition labels.

Real World Uses of Joule to Kilocalorie Conversion

• Joule: Commonly used for appearing on nutrition labels in some countries alongside kilojoules.
• Kilocalorie: Commonly used for labeling food energy content on nutrition labels.
• Joule: Commonly used in physics and engineering as the SI base unit for work and energy.
• Kilocalorie: Commonly used on US and international food labels to state calorie content.

Frequently Asked Questions

What is the formula to convert Joule to Kilocalorie?

The formula is: Kilocalorie = Joule x 0.00023901. Multiply any Joule value by 0.00023901 to get the equivalent in Kilocalorie.

What is 1 Joule in Kilocalorie?

1 J = 0.00023901 kcal.

How many Joule are in 1 Kilocalorie?

1 kcal = 4183.9253587716 J.

Is Joule bigger or smaller than Kilocalorie?

Joule is smaller than Kilocalorie. 1 Kilocalorie = 4183.9253587716 J.

What is 5000 J in kcal?

5000 J = 1.195028681 kcal.

What is 500 kcal in J?

500 kcal = 2,092,000 J.

How is a joule defined?

A joule equals the energy used when a force of 1 newton moves an object 1 meter — it directly links energy to the SI units of force and distance.