# Joule

Updated: 10/17/2017 by Computer Hope

The **joule** is a scientific unit, represented by the letter **J**, which measures an amount of energy, heat, or work. One joule is equal to the amount of work done (energy transferred) when one Newton (another scientific unit, represented by **N**) of force is applied through a distance of one meter. A Newton is the amount of force required to move one kilogram at a speed of one meter divided by the amount of time in seconds (represented by **s**), squared.

In other words, **J** = **N * m** = **kg** * **m** ^ **2** / **s** ^ **2**.