Foot-pound per Second to Horsepower (mechanical) Converter
Power · unit-converter
Convert Foot-pound per Second 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: Foot-pound per Second (ft_lb_s)
To: Horsepower (mechanical) (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).
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 foot-pounds per second to horsepower (mechanical, 550 ft·lb/s)
1 foot-pound per second is equal to 0.00181818181818 horsepower (mechanical) when both are expressed in watt-equivalents:
1 ft_lb_s = (1.3558179483314003 W ÷ 745.6998715822702 W) hp = 0.00181818181818 hp
Each foot-pound per second is defined as 1.3558179483314003 W and each horsepower (mechanical) as 745.6998715822702 W in this tool, so one ft_lb_s equals 1.3558179483314003 ÷ 745.6998715822702 hp = 0.00181818181818 hp.
Let d(ft_lb_s) be the numeric value in Foot-pound per Second (ft_lb_s), and d(hp) the value in Horsepower (mechanical) (hp). Then:
d(hp) = d(ft_lb_s) × (1.3558179483314003 / 745.6998715822702)
Equivalently, divide by how many ft_lb_s fit into one hp (watts per hp divided by watts per ft_lb_s):
d(hp) = d(ft_lb_s) ÷ 550
Or: horsepower (mechanical) = foot-pound per second ÷ 550
Examples
Example #1: Convert 1 ft_lb_s to horsepower (mechanical)
1 ft_lb_s = 1 ft_lb_s × (1.3558179483314003/745.6998715822702) hp = 0.0018181818 hp
1 ft_lb_s = 1 ft_lb_s ÷ 550 = 0.0018181818 hp
Intermediate watts: 1.3558179483 W
Example #2: Convert 10 ft_lb_s to horsepower (mechanical)
10 ft_lb_s = 10 ft_lb_s × (1.3558179483314003/745.6998715822702) hp = 0.0181818182 hp
10 ft_lb_s = 10 ft_lb_s ÷ 550 = 0.0181818182 hp
Intermediate watts: 13.5581794833 W
Summary
To convert Foot-pound per Second to Horsepower (mechanical), multiply the value in ft_lb_s by the ratio of watts per ft_lb_s divided by watts per hp. Equivalently: value_hp = value_ft_lb_s × (1.3558179483314003 / 745.6998715822702). Numerically, 1 ft_lb_s equals 0.001818181818181818 hp.
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 Foot-pound per Second to Horsepower (mechanical) is 1.818182e-3 (1 ft_lb_s = 0.001818181818181818 hp).
Conversion tables
| Foot-pound per Second (ft_lb_s) | Horsepower (mechanical) (hp) |
|---|---|
| 0.1 | 0.0001818182 |
| 1 | 0.0018181818 |
| 2 | 0.0036363636 |
| 3 | 0.0054545455 |
| 4 | 0.0072727273 |
| 5 | 0.0090909091 |
| 6 | 0.0109090909 |
| 7 | 0.0127272727 |
| 8 | 0.0145454545 |
| 9 | 0.0163636364 |
| Foot-pound per Second (ft_lb_s) | Horsepower (mechanical) (hp) |
|---|---|
| 10 | 0.0181818182 |
| 20 | 0.0363636364 |
| 30 | 0.0545454545 |
| 40 | 0.0727272727 |
| 50 | 0.0909090909 |
| 60 | 0.1090909091 |
| 70 | 0.1272727273 |
| 80 | 0.1454545455 |
| 90 | 0.1636363636 |
| 100 | 0.1818181818 |