Gigawatt is 1000000000 watt units.
Gigawatts to Megawatts Converter — GW to MW
Convert Gigawatt (GW) to Megawatt (MW) using the exact conversion factor (1 gigawatt = 1,000 megawatt). See the formula, worked examples, and conversion table.
Gigawatts to Megawatts converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Megawatt is 1000000 watt units.
Result = input x 1e+9 / 1e+6.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Gigawatts to Megawatts
Gigawatt and Megawatt both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Gigawatt is 1000000000 watt units, and megawatt is 1000000 watt units.
Formula
megawatts = gigawatts × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 gigawatt equals 1000000000 base units, and 1 megawatt equals 1000000 base units, so dividing one by the other gives the direct gigawatt-to-megawatt factor of 1000.
Simple example
1 GW × 1000 = 1,000 MW
1 gigawatt = 1,000 megawatts.
Real-world example
120 GW × 1000 = 120,000 MW
120 gigawatts = 120,000 megawatts.
Conversion table
| Gigawatt (GW) | Megawatt (MW) |
|---|---|
| 1 GW | 1,000 MW |
| 5 GW | 5,000 MW |
| 12 GW | 12,000 MW |
| 24 GW | 24,000 MW |
| 120 GW | 120,000 MW |
| 240 GW | 240,000 MW |
Reverse conversion: Megawatt to Gigawatt
1 MW × 0.001 = 0.001 GW
1 megawatt = 0.001 gigawatts.
gigawatts = megawatts × 0.001
For a page dedicated to this direction, see Megawatt to Gigawatt.
Understanding the Gigawatt (GW)
Gigawatt is 1000000000 watt units.
Understanding the Megawatt (MW)
Megawatt is 1000000 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megawatts are in 1 gigawatt?
1 gigawatt equals 1,000 megawatts, using the exact defined conversion factor rather than an estimate.
How do I convert gigawatt to megawatt?
Multiply the gigawatt value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert megawatt back to gigawatt?
Use the reverse factor: 1 megawatt equals 0.001 gigawatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigawatt?
Gigawatt (GW) is a unit of electricity.
What is a megawatt?
Megawatt (MW) is a unit of electricity.
Is the gigawatt to megawatt conversion exact?
Yes. Both gigawatt and megawatt are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.