The Unit Converters

Kilocalorie to Joule

1 Kilocalorie = 4186.8 Joule


Conversion Formula

To convert Kilocalorie to Joule, multiply the value by 4186.8.

Kilocalorie × 4186.8 = Joule

Quick Reference

kcal J
1 4186.8
5 20934
10 41868
25 104670
50 209340
100 418680
500 2093400
1000 4186800

What is Kilocalorie?

The kilocalorie (symbol: kcal) is a unit of energy equal to 1,000 small calories.

It is often referred to as the food calorie or simply a Calorie (with a capital C) in nutritional contexts.

Common Uses

The kilocalorie is the standard unit used globally to represent the energy content of foods and the energy expenditure of physical activity in humans.

What is Joule?

The joule (symbol: J) is the base unit of energy in the International System of Units (SI).

It is equal to the energy transferred to (or work done on) an object when a force of one newton acts on that object in the direction of the force’s motion through a distance of one meter.

Common Uses

The joule is used in all fields of science and engineering to measure work, energy, and heat. It is a key unit in physics for calculating kinetic energy, potential energy, and thermal energy.

How many joule are in a kilocalorie?

There are 4186.8 joule in 1 kilocalorie.


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