Watt to Gigawatt Converter
Convert Watt (W) to Gigawatt (GW) instantly. 1 W = 1.000000e-9 GW.
Power Converter
22 units available
1 W = 1.000000e-9 GW
Formula:
GW = W × 1.000000e-9With your value: 1 W = 1.000000e-9 GW
How big is that?
Everyday references on a logarithmic scale, all expressed in watt so you can sanity-check the result.
Other Watt to Gigawatt conversions
Watt to Gigawatt Conversion Table
| Watt (W) | Gigawatt (GW) |
|---|---|
| 0.5 | 5.000000e-10 |
| 1 | 1.000000e-9 |
| 2 | 2.000000e-9 |
| 5 | 5.000000e-9 |
| 10 | 1.000000e-8 |
| 15 | 1.500000e-8 |
| 20 | 2.000000e-8 |
| 25 | 2.500000e-8 |
| 50 | 5.000000e-8 |
| 100 | 1.000000e-7 |
| 250 | 2.500000e-7 |
| 500 | 5.000000e-7 |
| 1000 | 1.000000e-6 |
Gigawatt to Watt Conversion Table
| Gigawatt (GW) | Watt (W) |
|---|---|
| 0.5 | 500,000,000 |
| 1 | 1,000,000,000 |
| 2 | 2,000,000,000 |
| 5 | 5,000,000,000 |
| 10 | 10,000,000,000 |
| 15 | 15,000,000,000 |
| 20 | 20,000,000,000 |
| 25 | 25,000,000,000 |
| 50 | 50,000,000,000 |
| 100 | 100,000,000,000 |
| 250 | 250,000,000,000 |
| 500 | 500,000,000,000 |
| 1000 | 1.000000e+12 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Watt (W)
Power
Derived from the watt (1 W = 1 J/s).
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Gigawatt (GW)
Power
Derived from the watt (1 W = 1 J/s).
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Watt to Gigawatt
To convert from Watt (W) to Gigawatt (GW), multiply the value by 1.000000e-9.
Formula: GW = W × 1.000000e-9
Reverse: W = GW × 1.000000e+9
Step-by-Step Example
- Start with your value in Watt. For example: 5 W
- Multiply by the conversion factor: 5 x 1.000000e-9
- The result is: 5.000000e-9 GW
About Watt
The watt (W) is a unit of power. One watt equals 1 watt. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: power calculations, engineering and science, education.
About Gigawatt
The gigawatt (GW) is a unit of power. One gigawatt equals 1.000000 × 10^+9 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: power calculations, engineering and science, education.
Frequently Asked Questions
How many Gigawatt are in 1 Watt?
There are exactly 1.000000e-9 Gigawatt in 1 Watt. This means the conversion factor from Watt to Gigawatt is 1.000000e-9.
What is the formula to convert Watt to Gigawatt?
The formula to convert Watt to Gigawatt is: GW = W × 1.000000e-9. For example, to convert 10 Watt to Gigawatt, you would multiply 10 by 1.000000e-9.
What is a Watt?
The watt (W) is a unit of power. One watt equals 1 watt. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Gigawatt?
The gigawatt (GW) is a unit of power. One gigawatt equals 1.000000 × 10^+9 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Watt?
The Watt is commonly used in power calculations, engineering and science, education.
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Cite this page
UnitConvertLab. (2026). Watt to Gigawatt converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/watt-to-gigawatt