Watts to Joules (W → J)
Formula
1 W = 1 JConversion Table
| W | J |
|---|---|
| 0 | 0 |
| 1.0000 | 1.0000 |
| 2.0000 | 2.0000 |
| 3.0000 | 3.0000 |
| 4.0000 | 4.0000 |
| 5.0000 | 5.0000 |
| 6.0000 | 6.0000 |
| 7.0000 | 7.0000 |
| 8.0000 | 8.0000 |
| 9.0000 | 9.0000 |
| 10.000 | 10.000 |
| 11.000 | 11.000 |
| 12.000 | 12.000 |
| 13.000 | 13.000 |
| 14.000 | 14.000 |
| 15.000 | 15.000 |
| 16.000 | 16.000 |
| 17.000 | 17.000 |
| 18.000 | 18.000 |
| 19.000 | 19.000 |
| W | J |
|---|---|
| 20.000 | 20.000 |
| 21.000 | 21.000 |
| 22.000 | 22.000 |
| 23.000 | 23.000 |
| 24.000 | 24.000 |
| 25.000 | 25.000 |
| 26.000 | 26.000 |
| 27.000 | 27.000 |
| 28.000 | 28.000 |
| 29.000 | 29.000 |
| 30.000 | 30.000 |
| 31.000 | 31.000 |
| 32.000 | 32.000 |
| 33.000 | 33.000 |
| 34.000 | 34.000 |
| 35.000 | 35.000 |
| 36.000 | 36.000 |
| 37.000 | 37.000 |
| 38.000 | 38.000 |
| 39.000 | 39.000 |
| W | J |
|---|---|
| 40.000 | 40.000 |
| 41.000 | 41.000 |
| 42.000 | 42.000 |
| 43.000 | 43.000 |
| 44.000 | 44.000 |
| 45.000 | 45.000 |
| 46.000 | 46.000 |
| 47.000 | 47.000 |
| 48.000 | 48.000 |
| 49.000 | 49.000 |
| 50.000 | 50.000 |
| 51.000 | 51.000 |
| 52.000 | 52.000 |
| 53.000 | 53.000 |
| 54.000 | 54.000 |
| 55.000 | 55.000 |
| 56.000 | 56.000 |
| 57.000 | 57.000 |
| 58.000 | 58.000 |
| 59.000 | 59.000 |
| W | J |
|---|---|
| 60.000 | 60.000 |
| 61.000 | 61.000 |
| 62.000 | 62.000 |
| 63.000 | 63.000 |
| 64.000 | 64.000 |
| 65.000 | 65.000 |
| 66.000 | 66.000 |
| 67.000 | 67.000 |
| 68.000 | 68.000 |
| 69.000 | 69.000 |
| 70.000 | 70.000 |
| 71.000 | 71.000 |
| 72.000 | 72.000 |
| 73.000 | 73.000 |
| 74.000 | 74.000 |
| 75.000 | 75.000 |
| 76.000 | 76.000 |
| 77.000 | 77.000 |
| 78.000 | 78.000 |
| 79.000 | 79.000 |
Watts to Joules Conversion
Converting Watts (W) to Joules (J) is a common energy and power conversion. 1 W equals 1 J. For example, 100 W is equal to 100 J.
Quick Mental Math: Watts to Joules
Multiply watts by seconds to get joules; one watt for one second equals one joule.
Why is converting Watts to Joules tricky?
Watts are power (energy per second), not energy itself; time must be included.
Quick Reference Values
1 W = 1 J. 5 W = 5 J. 10 W = 10 J. 25 W = 25 J. 50 W = 50 J. 100 W = 100 J.
What is Watts?
Watts (W) is a unit of energy and power. The watt (W) is the SI unit of power, defined as one joule per second (1 W = 1 J/s). It measures the rate of energy transfer or conversion. The watt is named after James Watt and standardized by the BIPM according to the International System of Units [bipm-si-brochure]. Named after engineer James Watt in the late 19th century, the watt was adopted officially by the CIPM and BIPM to quantify mechanical and electrical power consistently. It became part of the SI base units in 1960 [bipm-si-brochure]. Watts measure power output and consumption in electrical, mechanical, and thermal systems globally. It is used across industries, including electronics, automotive, and power generation, following ISO and NIST standards [nist-sp-811].
What is Joules?
Joules (J) is a unit of energy and power. The joule is the SI unit of energy defined as the work done when a force of one newton moves an object one meter in the direction of the force. It equals one kilogram meter squared per second squared (kg·m²/s²). This definition aligns with the International System of Units as standardized by the BIPM [bipm-si-brochure]. The joule is named after James Prescott Joule, a 19th-century physicist who studied energy conservation. It was officially adopted as a unit of energy by the CGPM in 1948 to unify energy measurement standards internationally [cgpm-resolutions]. Joules are used worldwide in physics, engineering, and electrical industries to quantify energy, work, and heat. Countries using the SI system, including those in Europe, Asia, and the Americas, rely on joules for scientific and industrial applications [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: watt, wat, wats, wattss, joule, joul, jouls, juls. All of these refer to the Watts to Joules conversion.