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About this tool
Convert gigawatts to watts instantly. Free, bidirectional, and fully in-browser.
1 gigawatt equals 1000000000 watts — enter any gigawatt value to convert it to watts instantly. This Gigawatt to Watt converter is a client-side tool: it applies a single multiplication (W = GW × 1000000000) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert watts back to gigawatts. A reference table lists common gigawatt values already converted, and nothing you enter is sent to a server.
Open Gigawatt to Watt Converter on AltFTool — it loads instantly in your browser.
Type the value you want to convert into the Gigawatt field.
Read the equivalent in watts in the result field, and copy it if needed.
Use the decimal-places slider for more or less precision, or press swap to convert watts to gigawatts.
The result updates as you type, and the swap button flips the conversion to watt → gigawatt without reloading.
The conversion uses the precise factor (W = GW × 1000000000), so the number matches a manual calculation to the decimal places you choose.
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Everything runs locally in your browser — no upload, no account, no limit on conversions.
One gigawatt is 1000000000 watts. Multiply the gigawatt value by 1000000000 to convert. For example, 10 GW = 10000000000 W.
W = GW × 1000000000. This tool applies it automatically and shows a worked example: 10 GW = 10000000000 W.
Yes. Press the swap button, or type into the watt field, and the tool converts watts to gigawatts using the inverse of the same relationship.
It uses the standard power definition (W = GW × 1000000000), not a rounded approximation, so results are exact to the number of decimal places you select.
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Add the Gigawatt to Watt Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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