A Gigawatt (GW) equals 1e+9 watt(s), a scaled unit of electrical power used for giga-scale electrical work.
Gigawatts to Watts
Convert Gigawatt (GW) to Watt (W) instantly with an exact formula, conversion table, and FAQ.
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Convert gigawatts (GW) to watts (W) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
W = GW × 1.000000e+09
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Formula
W = GW × 1.000000e+09
GW = W × 1.000000e-09
Conversion table
| 1 GW | 1.000000e+09 W |
| 5 GW | 5.000000e+09 W |
| 10 GW | 1.000000e+10 W |
| 20 GW | 2.000000e+10 W |
| 50 GW | 5.000000e+10 W |
| 100 GW | 1.000000e+11 W |
| 500 GW | 5.000000e+11 W |
| 1000 GW | 1.000000e+12 W |
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How the formula works
Both gigawatt and watt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in gigawatts by 1.000000e+09 to get watts. To reverse the conversion, multiply a watt value by 1.000000e-09 to get back to gigawatts.
Frequently asked questions
What is Gigawatt (GW)?
A Gigawatt (GW) equals 1e+9 watt(s), a scaled unit of electrical power used for giga-scale electrical work.
What is Watt (W)?
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
How do I convert gigawatts to watts?
Multiply the gigawatt value by 1.000000e+09 to get the equivalent in watts. For example, 5 GW × 1.000000e+09 = 5.000000e+09 W.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e+09 is an exact, non-rounded value.
Can I convert watts back to gigawatts?
Yes. Divide the watt value by 1.000000e+09, or multiply it by 1.000000e-09, to get gigawatts.
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About converting gigawatts to watts
A Gigawatt (GW) equals 1e+9 watt(s), a scaled unit of electrical power used for giga-scale electrical work. The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
Use this calculator to move between gigawatts and watts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.