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Gigawatt-hour [GWh] to Watt-hour [Wh] Converter

Quick Reference

1 Gigawatt-hour (GWh) = 1000000000 Watt-hour (Wh)

1 Watt-hour (Wh) = 1.0000e-9 Gigawatt-hour (GWh)

How to Convert Gigawatt-hour to Watt-hour

1 GWh = 1000000000 Wh
1 Wh = 1.0000e-9 GWh

To convert Gigawatt-hour to Watt-hour, multiply the value by 1000000000. To convert Watt-hour back to Gigawatt-hour, divide by 1000000000.

Example: convert 10 GWh to Wh:
10 GWh = 10 x 1000000000 = 1.0000e+10 Wh

↔ Convert Watt-hour to Gigawatt-hour

Gigawatt-hour

Definition: A gigawatt-hour (symbol GWh) is a unit of energy equal to one gigawatt (1,000,000,000 watts) of power sustained for one hour. It represents a very large amount of energy.

History/origin: The gigawatt-hour is a derivative of the watt-hour, using the SI prefix 'giga-' to denote a factor of one billion. It became relevant with the development of very large-scale power generation facilities.

Current use: Gigawatt-hours are used to measure the energy output of entire power grids, the energy consumption of large countries or regions, and the total energy production of large renewable energy projects.

Watt-hour

Definition: A watt-hour (symbol Wh) is a unit of energy equal to one watt of power sustained for one hour. It is commonly used to measure electrical energy consumption.

History/origin: The watt-hour is derived from the watt, the SI unit of power, and the hour, a unit of time. It was developed alongside the increasing use of electricity in the late 19th and early 20th centuries.

Current use: Watt-hours are commonly used to measure the energy capacity of batteries, the energy consumption of household appliances, and the amount of electricity generated or consumed by power plants and consumers.

Gigawatt-hour to Watt-hour Conversion Table

Gigawatt-hour [GWh]Watt-hour [Wh]
1 GWh1000000000 Wh
2 GWh2000000000 Wh
5 GWh5000000000 Wh
10 GWh10000000000 Wh
20 GWh20000000000 Wh
50 GWh50000000000 Wh
100 GWh100000000000 Wh
200 GWh200000000000 Wh
500 GWh500000000000 Wh
1000 GWh1.0000e+12 Wh

Common Gigawatt-hour to Watt-hour conversions

  • 1 GWh = 1,000,000,000 Wh
  • 2 GWh = 2,000,000,000 Wh
  • 3 GWh = 3,000,000,000 Wh
  • 4 GWh = 4,000,000,000 Wh
  • 5 GWh = 5,000,000,000 Wh
  • 6 GWh = 6,000,000,000 Wh
  • 7 GWh = 7,000,000,000 Wh
  • 8 GWh = 8,000,000,000 Wh
  • 9 GWh = 9,000,000,000 Wh
  • 10 GWh = 10,000,000,000 Wh
  • 12 GWh = 12,000,000,000 Wh
  • 15 GWh = 15,000,000,000 Wh
  • 20 GWh = 20,000,000,000 Wh
  • 25 GWh = 25,000,000,000 Wh
  • 30 GWh = 30,000,000,000 Wh
  • 40 GWh = 40,000,000,000 Wh
  • 50 GWh = 50,000,000,000 Wh
  • 60 GWh = 60,000,000,000 Wh
  • 75 GWh = 75,000,000,000 Wh
  • 100 GWh = 100,000,000,000 Wh
  • 150 GWh = 150,000,000,000 Wh
  • 200 GWh = 200,000,000,000 Wh
  • 250 GWh = 250,000,000,000 Wh
  • 300 GWh = 300,000,000,000 Wh
  • 500 GWh = 500,000,000,000 Wh
  • 750 GWh = 750,000,000,000 Wh
  • 1,000 GWh = 1,000,000,000,000 Wh

Common pairs of Energy

Gigawatt-hour [GWh] to Watt-hour [Wh] Converter

What is 1 GWh in Wh?
1 Gigawatt-hour (GWh) equals 1,000,000,000 Wh, and 1 Wh equals 0.000000001 GWh.
How do I convert Gigawatt-hour to Watt-hour?
Multiply by 1,000,000,000: 10 GWh × 1,000,000,000 = 10,000,000,000 Wh. The converter above does it for any value, with the precision you choose.
What is 100 GWh in Wh?
100 GWh = 100,000,000,000 Wh. Common amounts are listed on this page, each with its own step-by-step page.
Is a Gigawatt-hour bigger than a Watt-hour?
Yes. 1 GWh = 1,000,000,000 Wh, so the same quantity becomes a larger number when written in Wh.
Gigawatt-hour to Watt-hour Converter | UtilLab