Megawatts to Gigawatts Converter
Convert megawatt to gigawatt instantly. 1 MW = 0.001 GW, worked steps and a full reference table.
How to use it
- Type the value in megawatt — the result updates as you type.
- Use Swap to flip the direction, or change either dropdown to convert between any two units.
- Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.
Examples
| 1 MW | 0.001 GW |
| 5 MW | 0.005 GW |
| 10 MW | 0.01 GW |
| 100 MW | 0.1 GW |
One megawatt equals 0.001 gigawatts (GW). To convert megawatts to gigawatts, multiply by 0.001; to go back the other way, multiply by 1000 instead.
The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.
What megawatts and gigawatts actually measure
Megawatt (MW) — A megawatt is a million watts. Wind turbines, data centres and small power stations.
Gigawatt (GW) — A gigawatt is a billion watts. National grid capacity and large power stations.
Megawatts to Gigawatts conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| MW | GW |
|---|---|
| 1 MW | 0.001 GW |
| 2 MW | 0.002 GW |
| 5 MW | 0.005 GW |
| 10 MW | 0.01 GW |
| 25 MW | 0.025 GW |
| 50 MW | 0.05 GW |
| 100 MW | 0.1 GW |
How to convert megawatts to gigawatts by hand
Multiply the number of megawatts by 0.001.
For example, 25 MW × 0.001 = 0.025 GW.
Going the other way, divide by 0.001 — or multiply by 1000, which is the same thing and easier to do in your head.
Everything runs in your browser
There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.
Questions people ask
How many GW are in 1 MW?
1 MW equals exactly 0.001 GW. Multiply any value in megawatt by 0.001 to get gigawatt.
Is anything uploaded to a server?
No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.
Last updated 18 August 2026