Hectowatt is 100 watt units.
Hectowatts to Gigawatts Converter — hW to GW
Convert Hectowatt (hW) to Gigawatt (GW) using the exact conversion factor (1 hectowatt = 1e-7 gigawatt). See the formula, worked examples, and conversion table.
Hectowatts to Gigawatts 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.
Gigawatt is 1000000000 watt units.
Result = input x 100 / 1e+9.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Hectowatts to Gigawatts
Hectowatt and Gigawatt 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: Hectowatt is 100 watt units, and gigawatt is 1000000000 watt units.
Formula
gigawatts = hectowatts × 1e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 hectowatt equals 100 base units, and 1 gigawatt equals 1000000000 base units, so dividing one by the other gives the direct hectowatt-to-gigawatt factor of 1e-7.
Simple example
1 hW × 1e-7 = 1e-7 GW
1 hectowatt = 1e-7 gigawatts.
Real-world example
120 hW × 1e-7 = 0.000012 GW
120 hectowatts = 0.000012 gigawatts.
Conversion table
| Hectowatt (hW) | Gigawatt (GW) |
|---|---|
| 1 hW | 1e-7 GW |
| 5 hW | 5e-7 GW |
| 12 hW | 0.0000012 GW |
| 24 hW | 0.0000024 GW |
| 120 hW | 0.000012 GW |
| 240 hW | 0.000024 GW |
Reverse conversion: Gigawatt to Hectowatt
1e-7 GW × 10000000 = 1 hW
1e-7 gigawatts = 1 hectowatt.
hectowatts = gigawatts × 10000000
For a page dedicated to this direction, see Gigawatt to Hectowatt.
Understanding the Hectowatt (hW)
Hectowatt is 100 watt units.
Understanding the Gigawatt (GW)
Gigawatt is 1000000000 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gigawatts are in 1 hectowatt?
1 hectowatt equals 1e-7 gigawatts, using the exact defined conversion factor rather than an estimate.
How do I convert hectowatt to gigawatt?
Multiply the hectowatt value by 1e-7. The converter above does this instantly to whatever precision you set.
How do I convert gigawatt back to hectowatt?
Use the reverse factor: 1 gigawatt equals 10,000,000 hectowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectowatt?
Hectowatt (hW) is a unit of electricity.
What is a gigawatt?
Gigawatt (GW) is a unit of electricity.
Is the hectowatt to gigawatt conversion exact?
Yes. Both hectowatt and gigawatt are defined by fixed standards rather than physical artifacts, so the factor of 1e-7 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.