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Convert Watt (W) to Gigawatt (GW)

Please provide values below to convert Watt (W) to Gigawatt (GW).
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      Updated on September 1, 2025

      About Watt (W) to Gigawatt (GW) Conversion Calculator

      Written By
      author
      Nadiba Rahman
      Reviewed by
      author
      Mrinmoy Roy
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      You can use our Watt (W) to Gigawatt (GW) conversion calculator as a reliable and efficient tool to simplify power conversions. It is designed for professionals, students, and anyone who needs a quick and accurate result. Conversion of Watt (W) to Gigawatt (GW) is crucial in related measurements. You can avoid the risk of manual calculation errors and save valuable time using our Watt (W) to Gigawatt (GW) converter.

      Relation Between Watt (W) and Gigawatt (GW)

      Let me explain to you about the relation between Watt W and Gigawatt (GW) first before moving to the conversion process. Because it’s essential to grasp what these units represent.

      What is Watt (W)?

      A watt (W) is the SI unit of power, defined as one joule per second. Watt (W) is a unit of power measurement which is commonly used in . Named after James Watt, a pioneer in steam engine development. Fundamental to electrical and mechanical power measurements. Highlights the rate of energy conversion or transfer in diverse systems. Widely used in everyday life, from lightbulbs to power plants..

      What is Gigawatt (GW)?

      Watt (W) is another unit of power measurement that is used in Engine power. A gigawatt (GW) is a unit of power equal to one billion watts (10⁹ watts).. Named after James Watt, a pioneer in steam engine development. Fundamental to electrical and mechanical power measurements. Highlights the rate of energy conversion or transfer in diverse systems. Widely used in everyday life, from lightbulbs to power plants..

      How to Convert Gigawatt (GW)?

      The conversion between Watt (W) and Gigawatt (GW) follows a simple formula:

      Watt = Watt × 1e-9

      Where, 1e-9 is the value that allows you to convert between Watt (W) and Gigawatt (GW).

      So,

      1 Gigawatt = 1e-9 Watt

      And, 1 Watt = 1/1e-9 Gigawatt
      alt

      Examples of Converting Watt (W) to Gigawatt (GW)

      To convert any value from Watt (W) to Gigawatt (GW), simply multiply the amount of Watt (W) by the conversion factor:

      1 Gigawatt = 1e-9 Watt

      For example, if you want to convert 5 Watt into Gigawatt and the conversion factor is 1e-9, then:

      5 Watt = 5 x 1e-9 Gigawatt

      Watt (W) to Gigawatt (GW) Conversion Chart

      Here’s a quick reference chart for common conversions between Watt (W) and Gigawatt (GW)
      Watt (W)Gigawatt (GW)
      10 Watt (W)1e-8 Gigawatt (GW)
      20 Watt (W)2e-8 Gigawatt (GW)
      30 Watt (W)3.0000000000000004e-8 Gigawatt (GW)
      40 Watt (W)4e-8 Gigawatt (GW)
      50 Watt (W)5.0000000000000004e-8 Gigawatt (GW)
      60 Watt (W)6.000000000000001e-8 Gigawatt (GW)
      70 Watt (W)7e-8 Gigawatt (GW)
      80 Watt (W)8e-8 Gigawatt (GW)
      90 Watt (W)9.000000000000001e-8 Gigawatt (GW)
      100 Watt (W)1.0000000000000001e-7 Gigawatt (GW)
      You can use the above chart for quick and easy reference.

      How 1 Watt (W) Converts to Other power Units

      See the relation between Watt (W) and other power related measurement units:
      1 Watt(W)3.412142 BTU per hour (BTU/h)
      1 Watt(W)0.056869 BTU per minute (BTU/min)
      1 Watt(W)0.000948 BTU per second (BTU/s)
      1 Watt(W)859.804156 Calories per hour (cal/h)
      1 Watt(W)14.330069 Calories per minute (cal/min)
      1 Watt(W)0.238846 Calories per second (cal/s)
      1 Watt(W)44.253729 Foot-pound per minute (ft-lb/min)
      1 Watt(W)0.737562 Foot-pound per second (ft-lb/s)
      1 Watt(W)0.001341 Horsepower (hp)
      1 Watt(W)3600.000000 Joule per hour (J/h)
      1 Watt(W)60.000000 Joule per minute (J/min)
      1 Watt(W)1.000000 Joule per second (J/s)
      1 Watt(W)0.860421 Kilocalorie per hour (Kcal/h)
      1 Watt(W)0.014331 Kilocalorie per minute (Kcal/min)
      1 Watt(W)0.001000 Kilowatt (kW)
      1 Watt(W)0.000001 Megawatt (MW)
      1 Watt(W)0.000284 Ton of refrigeration (TR)

      Features of Our Watt (W) to Gigawatt (GW) Conversion Calculator

      Our Watt W to Gigawatt (GW) converter is more than just a basic converter. Here's what makes it stand out:

      Output Precision Control

      You can control how precise your conversion results are. From settings, you can adjust decimal places from 0 to 12 places.

      Customizable Rounding Options

      You can control the output rounding options based on your necessity. You can turn the rounding mode on or off, and select between Ceiling or Floor rounding to match your needs.

      Multiple Number Formats

      Display your results the way you want:
      1. Standard format (e.g. 12.345245)
      2. Scientific notation (e.g. 1.23452e+1)
      3. Engineering format (e.g. 1.23452 × 10^1)

      Integrated Scientific Calculator

      We know you need to switch between a unit converter and a general calculator back and forth. To minimize your hassle, our Watt W to Gigawatt (GW) converter comes up with an integrated scientific calculator.

      Conversion History Tracking

      You can always review your past power conversions and go to them whenever you like. It stores your most recent 10 unit conversions.

      Thousand Separators Toggle

      Our Watt W to Gigawatt (GW) converter improves the output readability by toggling the thousand separators “On”. It’s useful when you work with large numbers.

      Conclusion

      Now, you understand how to convert Watt W to Gigawatt (GW) manually. But you can bypass the manual calculation using our power conversion calculator. This allows you to get faster and accurate results in Gigawatt (GW), which you can use in related measurements. With the help of our integrated scientific calculator, calculation history tracking, and precision control, our Watt W to Gigawatt (GW) converter is your swiss army knife for daily calculations.
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