Battery Equivalents and Replacements

Megawatt (MW) to Watt (W) Conversion Calculator and Table

Megawatt (MW) and Watt (W) are units of power, and their conversions are simple and straightforward - one just has to remember that "M" stands for "Mega," which is, according to the SI prefixes table, 106 (one million) of the main value.

Published: January 15, 2024.

To convert Megawatts to Watts, write the value in Megawatts (MW) and click 'Calculate':

Megawatts (MW) to Watts (W)

Megawatts (MW):

Watt (W):

How To Convert Megawatts (MW) to Watts (W)

"M" stands for "million" and means "one million." Thus, one Megawatt equals 1000000 Watts:

1 MW = 1000000 W = 106 W

For example, if You want to convert 15.34 MW to Watts, You can write:

P(MW) = 15.34 MW = 15.34 * 1000000 W = 15340000 W


  • 10 MW to W → 10 MW = 10 * 1000000 W = 10000000 W
  • 20 MW to W → 20 MW = 20 * 1000000 W = 20000000 W
  • 100 MW to W → 100 MW = 100 * 1000000 W = 100000000 W

Megawatt (MW) to Watt (W) Conversion Table

The following chart contains the most common Megawatt (MW) values converted to Watt (W):

Megawatt (MW) Watt (W)
0.00001 10
0.0001 100
0.001 1000
0.01 10000
0.1 100000
0.25 250000
0.5 500000
1 1000000
2 2000000
3 3000000
5 5000000
10 10000000
50 50000000
100 100000000


If You wish to convert values that are not in the table, please use the Megawatts to Watts conversion calculator.

A Brief History of Watts: The Unit of Power

The watt, denoted as 'W,' is a unit of power in the International System of Units (SI). It plays a vital role in understanding and measuring energy transfer across various fields, from physics to engineering. The story of the Watt is as much about scientific progress as it is about industrial evolution.

The Origins and Naming

The Watt is named after James Watt, a Scottish inventor and mechanical engineer whose improvements to the steam engine were instrumental in the advancement of the Industrial Revolution.

Despite common belief, Watt did not invent the steam engine, but his enhancements increased its efficiency significantly, revolutionizing its use in industry and transportation.

In tribute to his contributions, the term "watt" was proposed as a unit of power by the British Association for the Advancement of Science in 1882. The proposal was accepted by the International Electrical Congress, formally adopting Watt into the lexicon of scientific measurement.

Defining the Watt

The watt is defined as one joule of energy transferred per second. In more tangible terms, if a device is rated at one watt, it means it is capable of converting one joule of energy every second, be it from electrical, mechanical, or another form of energy.

The Watt and Its Relationship with Horsepower

The concept of horsepower, which predates the watt, was also developed by James Watt. He used it as a marketing tool to compare the output of steam engines with the power of draft horses. Eventually, the watt became the more standardized unit due to its consistency and ease of conversion within the SI system.

One horsepower is equivalent to approximately 746 watts. However, there are different definitions of horsepower used in various contexts, such as mechanical horsepower (approximately 745.7 watts), metric horsepower (735.5 watts), and electrical horsepower (746 watts).

The Scalability of Watts: Kilowatts and Megawatts

The watt's scalability makes it a versatile unit:

  • Kilowatts (kW): One kilowatt equals 1,000 watts. It's commonly used in household electricity for appliances and small machinery. For instance, a standard electric kettle operates at about 1 to 1.5 kW.
  • Megawatts (MW): One megawatt is equal to one million watts. This unit is prevalent in industrial applications and for measuring the output of power plants. A typical wind turbine can generate around 1 to 3 MW of power.

The watt, as a tribute to James Watt's engineering ingenuity, has become an essential unit in measuring power. Its importance is underscored in both everyday applications and vast industrial processes.

From powering a simple light bulb to driving massive turbines, the watt is a testament to human progress in harnessing and understanding energy. As technology evolves, the watt continues to be a pivotal unit, linking us to our industrial past and guiding us into an energy-conscious future.