Horsepower (mechanical) to Gigawatt Converter
Power · unit-converter
Convert Horsepower (mechanical) to Gigawatt 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: Horsepower (mechanical) (hp)
To: Gigawatt (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.
About Gigawatt
One gigawatt is one billion watts. Utility generation capacity and grid planning commonly use GW.
How to convert horsepower (mechanical, 550 ft·lb/s) to gigawatts
1 horsepower (mechanical) is equal to 7.45699872e-7 gigawatt when both are expressed in watt-equivalents:
1 hp = (745.6998715822702 W ÷ 1,000,000,000 W) gw = 7.45699872e-7 gw
Each horsepower (mechanical) is defined as 745.6998715822702 W and each gigawatt as 1,000,000,000 W in this tool, so one hp equals 745.6998715822702 ÷ 1,000,000,000 gw = 7.45699872e-7 gw.
Let d(hp) be the numeric value in Horsepower (mechanical) (hp), and d(gw) the value in Gigawatt (gw). Then:
d(gw) = d(hp) × (745.6998715822702 / 1,000,000,000)
Equivalently, divide by how many hp fit into one gw (watts per gw divided by watts per hp):
d(gw) = d(hp) ÷ 1341022.08959502796642
Or: gigawatt = horsepower (mechanical) ÷ 1341022.08959502796642
Examples
Example #1: Convert 1 hp to gigawatt
1 hp = 1 hp × (745.6998715822702/1,000,000,000) gw = 0.0000007457 gw
1 hp = 1 hp ÷ 1341022.08959502796642 = 0.0000007457 gw
Intermediate watts: 745.699871582 W
Example #2: Convert 10 hp to gigawatt
10 hp = 10 hp × (745.6998715822702/1,000,000,000) gw = 0.000007457 gw
10 hp = 10 hp ÷ 1341022.08959502796642 = 0.000007457 gw
Intermediate watts: 7,456.99871582 W
Summary
To convert Horsepower (mechanical) to Gigawatt, multiply the value in hp by the ratio of watts per hp divided by watts per gw. Equivalently: value_gw = value_hp × (745.6998715822702 / 1000000000). Numerically, 1 hp equals 7.456998715822702e-7 gw.
Relationship context
You are converting between mechanical power (horsepower, ft·lb/s) (Horsepower (mechanical, 550 ft·lb/s)) and SI / decimal power (watts and prefixes) (Gigawatts). All linear values are mapped through watts first. The numeric factor is 7.456999e-7.
Conversion tables
| Horsepower (mechanical) (hp) | Gigawatt (gw) |
|---|---|
| 0.1 | 0.0000000746 |
| 1 | 0.0000007457 |
| 2 | 0.0000014914 |
| 3 | 0.0000022371 |
| 4 | 0.0000029828 |
| 5 | 0.0000037285 |
| 6 | 0.0000044742 |
| 7 | 0.0000052199 |
| 8 | 0.0000059656 |
| 9 | 0.0000067113 |
| Horsepower (mechanical) (hp) | Gigawatt (gw) |
|---|---|
| 10 | 0.000007457 |
| 20 | 0.000014914 |
| 30 | 0.000022371 |
| 40 | 0.000029828 |
| 50 | 0.000037285 |
| 60 | 0.000044742 |
| 70 | 0.000052199 |
| 80 | 0.000059656 |
| 90 | 0.000067113 |
| 100 | 0.00007457 |