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
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
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.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Hectowatts to Gigawatts
Hectowatt and Gigawatt both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. 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
100 hW × 1e-7 = 0.00001 GW
100 hectowatts = 0.00001 gigawatts.
Conversion table
| Hectowatt (hW) | Gigawatt (GW) |
|---|---|
| 1 hW | 1e-7 GW |
| 10 hW | 0.000001 GW |
| 50 hW | 0.000005 GW |
| 100 hW | 0.00001 GW |
| 500 hW | 0.00005 GW |
| 1,000 hW | 0.0001 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 engineering.
What is a gigawatt?
Gigawatt (GW) is a unit of engineering.
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.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.