Power and Energy
WtoGW
Convert watts (W) to gigawatts (GW).
Factor1 W = 1e-9 GW
Converter
W
Accepts numbers or expressions, e.g. 150 + 14.7
Result
GW
Rendered to 6 significant figures.
Formula
Formula
GW = W × 1e-9
Multiply any value in watts by 1e-9 to obtain the value in gigawatts.
Worked example
Convert 1e+9 W to GW.
- 01Start with 1e+9 W.
- 02Multiply by the conversion factor: 1e+9 × 1e-9 = 1 GW.
Result1e+9 W = 1 GW
Conversion table
| W | GW |
|---|---|
| 1 | 1e-9 |
| 2 | 2e-9 |
| 5 | 5e-9 |
| 10 | 1e-8 |
| 20 | 2e-8 |
| 50 | 5e-8 |
| 100 | 1e-7 |
| 200 | 2e-7 |
| 500 | 5e-7 |
| 1000 | 1e-6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from W to GW?
1 W equals 1e-9 GW. To convert, multiply the value in watts by 1e-9.
How do I convert 1 W to GW?
1 W = 1e-9 GW. For any value, multiply by 1e-9.
How do I convert GW back to W?
Divide by the same factor — or equivalently, multiply by 1e+9. So 1 GW = 1e+9 W.
When would I need to convert watt to gigawatt?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).