Watt to Joule per Second Converter

A watt (W) is the SI unit of power, defined as one joule per second. Named after Scottish inventor James Watt, it represents the rate of energy transfer and is fundamental to all power measurements in the International System of Units.

The watt was named after James Watt in 1882 and became the SI unit of power in 1960. It replaced various earlier power units and provided a unified measure based on the fundamental relationship between energy and time, becoming universal in scientific and technical applications.

Watts are universally used for all power measurements, from small electronic devices to large machinery. They're fundamental in electrical engineering, physics, energy efficiency ratings, and form the basis for all other power unit measurements.

Joule per second (J/s) is a unit of power representing the rate of energy transfer of one joule per second. It's exactly equivalent to the watt and represents the fundamental definition of power as energy per unit time.

Joule per second represents the fundamental definition of power and was implicit in early thermodynamic studies. It became formalized with the development of the SI system and provides the direct relationship between energy (joules) and power (watts).

Joule per second is primarily used in educational contexts to illustrate the relationship between energy and power. In practical applications, it's equivalent to watts and is used in thermodynamic calculations and energy system analysis.