Power and Energy
ft·lbf/stohp
Convert foot-pounds force per second (ft·lbf/s) to mechanical horsepower (hp).
Factor1 ft·lbf/s = 0.001818182 hp
Converter
ft·lbf/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
hp
Rendered to 6 significant figures.
Formula
Formula
hp = ft·lbf/s × 0.001818182
Multiply any value in foot-pounds force per second by 0.001818182 to obtain the value in mechanical horsepower.
Worked example
Convert 550 ft·lbf/s to hp.
- 01Start with 550 ft·lbf/s.
- 02Multiply by the conversion factor: 550 × 0.001818182 = 1 hp.
Result550 ft·lbf/s = 1 hp
Conversion table
| ft·lbf/s | hp |
|---|---|
| 1 | 0.0018182 |
| 2 | 0.0036364 |
| 5 | 0.0090909 |
| 10 | 0.018182 |
| 20 | 0.036364 |
| 50 | 0.090909 |
| 100 | 0.18182 |
| 200 | 0.36364 |
| 500 | 0.90909 |
| 1000 | 1.8182 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ft·lbf/s to hp?
1 ft·lbf/s equals 0.001818182 hp. To convert, multiply the value in foot-pounds force per second by 0.001818182.
How do I convert 1 ft·lbf/s to hp?
1 ft·lbf/s = 0.00181818 hp. For any value, multiply by 0.001818182.
How do I convert hp back to ft·lbf/s?
Divide by the same factor — or equivalently, multiply by 550. So 1 hp = 550 ft·lbf/s.
When would I need to convert foot-pound force per second to mechanical horsepower?
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).