Gigawatts to Watts Converter
Enter a value to instantly convert between power units.
1 Gigawatt = 1000000000 Watt
Key Formulas
Kilowatt → Horsepower (mech)
hp = kW × 1.34102Horsepower (mech) → Kilowatt
kW = hp × 0.7457Watt → Kilowatt
kW = W × 0.001Kilowatt → Watt
W = kW × 1000Formula
W = GW × 1,000,000,000News articles and energy policy reports quote national grid capacity and large renewable projects in gigawatts. Converting GW to watts grounds these figures in everyday terms: 1 GW = one billion watts = enough to run a billion 1 W LED bulbs simultaneously. This conversion is valuable in energy education, journalism fact-checking, and when engineers need to express a country's generation capacity in the same unit as individual appliance ratings.
Source: NIST SP 811, Table B.8
Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
1 GW = 1,000,000,000 W — the output of a large nuclear reactor, equivalent to running 10 million 100 W light bulbs.
1 GW = 1000000000 W
0.1 GW = 100,000,000 W — a 100 MW wind farm, powering about 60,000–80,000 average homes.
0.1 GW = 100000000 W
The Three Gorges Dam peak output is about 3.2 GW = 3,200,000,000 W — one of the world's largest hydroelectric stations.
3.2 GW = 3200000000 W
A 0.5 GW combined-cycle gas turbine station = 500,000,000 W — a major regional power anchor for a metropolitan grid.
0.5 GW = 500000000 W