# Is one joule per second equivalent to one watt?

##### 1 Answer

Apr 30, 2015

Yes, one **Watt** is defined as **1 Joule** of energy per **1 second**.

*Power* is defined as *work* per unit of *time*

The **SI units** for work and time are *Joules* and *seconds*, respectively. One Watt was defined as a power of *1 Joule per second*.