Gigawatt to Horsepower (mechanical) Converter
Power · unit-converter
Convert Gigawatt to Horsepower (mechanical) with a fixed input and output unit, step-by-step formula line, and reference tables. Linear units use SI watt definitions; mechanical hp uses 550 ft·lbf/s; BTU/h uses the IT BTU; dBm/dBW are logarithmic relative to 1 mW and 1 W. The full Power Converter also includes PS/CV, TR, kVA/MVA, and ft·lb/s.
Calculator
From: Gigawatt (gw)
To: Horsepower (mechanical) (hp)
About Gigawatt
One gigawatt is one billion watts. Utility generation capacity and grid planning commonly use GW.
About Horsepower (mechanical)
Mechanical horsepower here is the US definition: 550 ft·lbf/s ≈ 745.70 W. Automotive and industrial specs often cite hp.
How to convert gigawatts to horsepower (mechanical, 550 ft·lb/s)
1 gigawatt is equal to 1341022.08959502796642 horsepower (mechanical) when both are expressed in watt-equivalents:
1 gw = (1,000,000,000 W ÷ 745.6998715822702 W) hp = 1341022.08959502796642 hp
Each gigawatt is defined as 1,000,000,000 W and each horsepower (mechanical) as 745.6998715822702 W in this tool, so one gw equals 1,000,000,000 ÷ 745.6998715822702 hp = 1341022.08959502796642 hp.
Let d(gw) be the numeric value in Gigawatt (gw), and d(hp) the value in Horsepower (mechanical) (hp). Then:
d(hp) = d(gw) × (1,000,000,000 / 745.6998715822702)
Equivalently, divide by how many gw fit into one hp (watts per hp divided by watts per gw):
d(hp) = d(gw) ÷ 7.45699872e-7
Or: horsepower (mechanical) = gigawatt ÷ 7.45699872e-7
Examples
Example #1: Convert 1 gw to horsepower (mechanical)
1 gw = 1 gw × (1,000,000,000/745.6998715822702) hp = 1341022.0896000001 hp
1 gw = 1 gw ÷ 7.45699872e-7 = 1341022.0896000001 hp
Intermediate watts: 1,000,000,000 W
Example #2: Convert 10 gw to horsepower (mechanical)
10 gw = 10 gw × (1,000,000,000/745.6998715822702) hp = 13410220.8959999997 hp
10 gw = 10 gw ÷ 7.45699872e-7 = 13410220.8959999997 hp
Intermediate watts: 10,000,000,000 W
Summary
To convert Gigawatt to Horsepower (mechanical), multiply the value in gw by the ratio of watts per gw divided by watts per hp. Equivalently: value_hp = value_gw × (1000000000 / 745.6998715822702). Numerically, 1 gw equals 1341022.089595028 hp.
Relationship context
You are converting between SI / decimal power (watts and prefixes) (Gigawatts) and mechanical power (horsepower, ft·lb/s) (Horsepower (mechanical, 550 ft·lb/s)). All linear values are mapped through watts first. The numeric factor is 1.341022e+6.
Conversion tables
| Gigawatt (gw) | Horsepower (mechanical) (hp) |
|---|---|
| 0.1 | 134,102.20896 |
| 1 | 1,341,022.0896000001 |
| 2 | 2,682,044.1791900001 |
| 3 | 4,023,066.2687900001 |
| 4 | 5,364,088.3583800001 |
| 5 | 6,705,110.4479799997 |
| 6 | 8,046,132.5375699997 |
| 7 | 9,387,154.6271700002 |
| 8 | 10,728,176.7168000005 |
| 9 | 12,069,198.8063999992 |
| Gigawatt (gw) | Horsepower (mechanical) (hp) |
|---|---|
| 10 | 13,410,220.8959999997 |
| 20 | 26,820,441.7919000015 |
| 30 | 40,230,662.6878999993 |
| 40 | 53,640,883.5838000029 |
| 50 | 67,051,104.4798000008 |
| 60 | 80,461,325.3756999969 |
| 70 | 93,871,546.2716999948 |
| 80 | 107,281,767.1679999977 |
| 90 | 120,691,988.0639999956 |
| 100 | 134,102,208.9599999934 |