Convert Gigawatts to Watts

Gigawatts

Accepts decimals and fractions, like 1.5 or 1 1/2.

Quick presets:

Keyboard shortcut: press S to swap units.

Watts

Round to 2 decimals

Contextual examples

1 Gigawatts = 1,000,000,000 Watts
10 Gigawatts = 10,000,000,000 Watts
100 Gigawatts = 100,000,000,000 Watts
1000 Gigawatts = 1,000,000,000,000 Watts

Watts to Gigawatts

Swap

How many watts in a gigawatts?

In 1 gigawatts there are 1,000,000,000 watts. Meanwhile in 1 watts there are 1.00000e-9 gigawatts. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Gigawatts to Watts calculator above to convert any number.

* Values rounded for readability — use the calculator above for full precision

Related calculators

Use these next if you want similar conversions or tools.

Watts to Gigawatts Gigawatts to Kilowatts Kilowatts to Watts Gigawatts to Megawatts Megawatts to Watts Gigawatts to Terawatts Terawatts to Watts Gigawatts to Petawatts

How does this converter work?

The Calculate Box tool to convert gigawatts to watts uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a gigawatts value in the box and have it instantly converted to watts.

Back to All Calculators

Convert Gigawatts to Watts

Convert gigawatts (GW) to watts (W) in seconds with a clear, accurate result. Enter your value in GW to see the watts conversion, based on 1 GW = 1,000,000,000 W.

Gigawatts

Accepts decimals and fractions, like 1.5 or 1 1/2.

Quick presets:

Keyboard shortcut: press S to swap units.

Watts

Round to 2 decimals

Contextual examples

1 Gigawatts = 1,000,000,000 Watts
10 Gigawatts = 10,000,000,000 Watts
100 Gigawatts = 100,000,000,000 Watts
1000 Gigawatts = 1,000,000,000,000 Watts

Watts to Gigawatts

Swap

How many watts in a gigawatts?

* Values rounded for readability — use the calculator above for full precision

How to convert gigawatts to watts?

To convert gigawatts (GW) to watts (W), use this rule:

1 gigawatt = 1,000,000,000 watts (10⁹ W)

Conversion formula

W = GW × 1,000,000,000

Quick examples

0.5 GW = 0.5 × 1,000,000,000 = 500,000,000 W
2 GW = 2 × 1,000,000,000 = 2,000,000,000 W
0.03 GW = 0.03 × 1,000,000,000 = 30,000,000 W

Tip: Moving from GW to W means multiplying by 10⁹, so the watt value gets much larger.

Frequently asked questions

How many watts are in a gigawatt?

1 gigawatt (GW) equals 1,000,000,000 watts (W).
That’s 10^9 watts.

How do you convert gigawatts to watts?

Multiply the gigawatt value by 1,000,000,000.

Formula: W = GW × 1,000,000,000

What is 0.5 gigawatts in watts?

0.5 GW equals 500,000,000 W.
You get it by multiplying 0.5 × 1,000,000,000.

What is 2 gigawatts in watts?

2 GW equals 2,000,000,000 W.
You get it by multiplying 2 × 1,000,000,000.

Can watts be larger than gigawatts?

Watts are the smaller unit. Gigawatts are much larger.
A gigawatt is one billion watts.

What does a gigawatt measure?

A gigawatt measures power. Power is the rate energy is used or made.
It’s common for large power plants and electric grid totals.

Why is the gigawatt to watt conversion based on 1,000,000,000?

The metric prefix giga- means 10^9.
That sets 1 GW equal to 10^9 W.

Is gigawatt to watt conversion the same for AC and DC power?

Yes, the unit conversion stays the same.
1 GW always equals 1,000,000,000 W for AC or DC.

How do you convert gigawatts to watts in scientific notation?

Move from GW to W by multiplying by 10^9.

Example: 3.2 GW = 3.2 × 10^9 W

What’s the difference between watts and watt-hours?

Watts measure power at a moment in time.
Watt-hours (Wh) measure energy used over time.

If a device uses 1,000 W for 1 hour, that’s 1,000 Wh (or 1 kWh).

How do gigawatts relate to kilowatts and megawatts?

All are power units, just different sizes:

1 GW = 1,000 MW
1 GW = 1,000,000 kW
1 GW = 1,000,000,000 W

What’s a quick way to estimate gigawatts to watts?

Take the gigawatt number and add nine zeros.

Example: 7 GW = 7,000,000,000 W

Related calculators

Use these next if you want similar conversions or tools.

Watts to Gigawatts Gigawatts to Kilowatts Kilowatts to Watts Gigawatts to Megawatts Megawatts to Watts Gigawatts to Terawatts Terawatts to Watts Gigawatts to Petawatts