Horsepower (mechanical) to Foot-pound per Second Converter
Power · unit-converter
Convert Horsepower (mechanical) to Foot-pound per Second 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: Foot-pound per Second (ft_lb_s)
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 Foot-pound per Second
Foot-pounds per second is a mechanical power rate: 1 ft·lb/s = 1.3558179483314004 W (exactly, from the international foot definition).
How to convert horsepower (mechanical, 550 ft·lb/s) to foot-pounds per second
1 horsepower (mechanical) is equal to 550 foot-pound per second when both are expressed in watt-equivalents:
1 hp = (745.6998715822702 W ÷ 1.3558179483314003 W) ft_lb_s = 550 ft_lb_s
Each horsepower (mechanical) is defined as 745.6998715822702 W and each foot-pound per second as 1.3558179483314003 W in this tool, so one hp equals 745.6998715822702 ÷ 1.3558179483314003 ft_lb_s = 550 ft_lb_s.
Let d(hp) be the numeric value in Horsepower (mechanical) (hp), and d(ft_lb_s) the value in Foot-pound per Second (ft_lb_s). Then:
d(ft_lb_s) = d(hp) × (745.6998715822702 / 1.3558179483314003)
Equivalently, divide by how many hp fit into one ft_lb_s (watts per ft_lb_s divided by watts per hp):
d(ft_lb_s) = d(hp) ÷ 0.00181818181818
Or: foot-pound per second = horsepower (mechanical) ÷ 0.00181818181818
Examples
Example #1: Convert 1 hp to foot-pound per second
1 hp = 1 hp × (745.6998715822702/1.3558179483314003) ft_lb_s = 550 ft_lb_s
1 hp = 1 hp ÷ 0.00181818181818 = 550 ft_lb_s
Intermediate watts: 745.699871582 W
Example #2: Convert 10 hp to foot-pound per second
10 hp = 10 hp × (745.6998715822702/1.3558179483314003) ft_lb_s = 5500 ft_lb_s
10 hp = 10 hp ÷ 0.00181818181818 = 5500 ft_lb_s
Intermediate watts: 7,456.99871582 W
Summary
To convert Horsepower (mechanical) to Foot-pound per Second, multiply the value in hp by the ratio of watts per hp divided by watts per ft_lb_s. Equivalently: value_ft_lb_s = value_hp × (745.6998715822702 / 1.3558179483314003). Numerically, 1 hp equals 550 ft_lb_s.
Relationship context
Both units are mechanical power (horsepower, ft·lb/s). Conversions use fixed watt factors, so results stay consistent with the definitions in this converter. The factor from Horsepower (mechanical) to Foot-pound per Second is 5.500000e+2 (1 hp = 550 ft_lb_s).
Conversion tables
| Horsepower (mechanical) (hp) | Foot-pound per Second (ft_lb_s) |
|---|---|
| 0.1 | 55 |
| 1 | 550 |
| 2 | 1,100 |
| 3 | 1,650 |
| 4 | 2,200 |
| 5 | 2,750 |
| 6 | 3,300 |
| 7 | 3,850 |
| 8 | 4,400 |
| 9 | 4,950 |
| Horsepower (mechanical) (hp) | Foot-pound per Second (ft_lb_s) |
|---|---|
| 10 | 5,500 |
| 20 | 11,000 |
| 30 | 16,500 |
| 40 | 22,000 |
| 50 | 27,500 |
| 60 | 33,000 |
| 70 | 38,500 |
| 80 | 44,000 |
| 90 | 49,500 |
| 100 | 55,000 |