Foot Pounds Per Second to Horsepower
Foot-pounds per second measures power as force times distance per time; 550 ft·lbf/s equals exactly 1 horsepower. Mechanical horsepower, about 745.7 watts, is the traditional unit for rating car and engine power in the US and UK. 1 ft·lbf/s equals ≈0.00181818 hp, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to power, measured here against power's base unit (W) — every other power unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
hp = ft·lbf/s × ≈0.00181818
ft·lbf/s = hp × 550
Worked example: 5 ft·lbf/s × ≈0.00181818 = ≈0.00909091 hp.
Conversion table
| Foot-pound per second (ft·lbf/s) | Horsepower (mech.) (hp) |
|---|---|
| 1 ft·lbf/s | ≈0.00181818 hp |
| 2 ft·lbf/s | ≈0.00363636 hp |
| 3 ft·lbf/s | ≈0.00545455 hp |
| 5 ft·lbf/s | ≈0.00909091 hp |
| 10 ft·lbf/s | ≈0.0181818 hp |
| 20 ft·lbf/s | ≈0.0363636 hp |
| 25 ft·lbf/s | ≈0.0454545 hp |
| 50 ft·lbf/s | ≈0.0909091 hp |
| 100 ft·lbf/s | ≈0.181818 hp |
| 250 ft·lbf/s | ≈0.454545 hp |
| 500 ft·lbf/s | ≈0.909091 hp |
| 1,000 ft·lbf/s | ≈1.81818 hp |
Frequently asked
- How many Horsepower in a foot-pound per second?
- 1 ft·lbf/s equals ≈0.00181818 hp.
- How do I convert Foot-pounds per second to Horsepower?
- Multiply the value in ft·lbf/s by ≈0.00181818 to get hp. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Foot-pound per second and Horsepower (mech.) are both defined by a fixed conversion factor to power's base unit (W), so the result shown is exact to the precision displayed, not an approximation.