Power and Energy
hptoft·lbf/s
Convert mechanical horsepower (hp) to foot-pounds force per second (ft·lbf/s).
Factor1 hp = 550 ft·lbf/s
Converter
hp
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ft·lbf/s
Rendered to 6 significant figures.
Formula
Formula
ft·lbf/s = hp × 550
Multiply any value in mechanical horsepower by 550 to obtain the value in foot-pounds force per second.
Worked example
Convert 1 hp to ft·lbf/s.
- 01Start with 1 hp.
- 02Multiply by the conversion factor: 1 × 550 = 550 ft·lbf/s.
Result1 hp = 550 ft·lbf/s
Conversion table
| hp | ft·lbf/s |
|---|---|
| 1 | 550 |
| 2 | 1100 |
| 5 | 2750 |
| 10 | 5500 |
| 20 | 11000 |
| 50 | 27500 |
| 100 | 55000 |
| 200 | 1.1000e+5 |
| 500 | 2.7500e+5 |
| 1000 | 5.5000e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from hp to ft·lbf/s?
1 hp equals 550 ft·lbf/s. To convert, multiply the value in mechanical horsepower by 550.
How do I convert 1 hp to ft·lbf/s?
1 hp = 550 ft·lbf/s. For any value, multiply by 550.
How do I convert ft·lbf/s back to hp?
Divide by the same factor — or equivalently, multiply by 0.001818182. So 1 ft·lbf/s = 0.00181818 hp.
When would I need to convert mechanical horsepower to foot-pound force per second?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).