3 Foot-Pound/Second to Horsepower (Mech)
Quick answer
3 Foot-Pound/Second (ft·lbf/s) equals
0.005455 hp
To convert 3 Foot-Pound/Seconds to Horsepower (Mech)s, multiply by 0.0018181818. Therefore, 3 Foot-Pound/Second (ft·lbf/s) equals 0.005455 Horsepower (Mech) (hp).
Formula: hp = ft·lbf/s × 0.0018181818. Calculation: 3 × 0.0018181818 = 0.005455 hp.
Convert Foot-Pound/Second (ft·lbf/s) to Horsepower (Mech) (hp) online with our free unit converter. In power, 1 ft·lbf/s = 0.001818 hp. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Foot-Pound/Second to Horsepower (Mech)
- Step 1 — start with the formula. hp = ft·lbf/s × 0.0018181818
- Step 2 — substitute your figure. 3 ft·lbf/s × 0.0018181818
- Step 3 — read the result. 3 ft·lbf/s = 0.005455 hp
- Step 4 — check it in reverse. ft·lbf/s = hp × 550.0000000127 returns 3.0003 ft·lbf/s, which matches the figure you started with.
Power Converter
22 units available
3 ft·lbf/s = 0.005455 hp
Formula:
hp = ft·lbf/s × 0.0018181818With your value: 3 ft·lbf/s = 0.00545455 hp
How big is that?
Everyday references on a logarithmic scale, all expressed in foot-pound/second so you can sanity-check the result.
Other Foot-Pound/Second to Horsepower (Mech) conversions
Foot-Pound/Second to Horsepower (Mech) Conversion Table
| Foot-Pound/Second (ft·lbf/s) | Horsepower (Mech) (hp) |
|---|---|
| 0.5 | 0.000909 |
| 1 | 0.001818 |
| 2 | 0.003636 |
| 5 | 0.009091 |
| 10 | 0.018182 |
| 15 | 0.027273 |
| 20 | 0.036364 |
| 25 | 0.045455 |
| 50 | 0.090909 |
| 100 | 0.181818 |
| 250 | 0.454545 |
| 500 | 0.909091 |
| 1000 | 1.818182 |
Horsepower (Mech) to Foot-Pound/Second Conversion Table
| Horsepower (Mech) (hp) | Foot-Pound/Second (ft·lbf/s) |
|---|---|
| 0.5 | 275 |
| 1 | 550 |
| 2 | 1,100 |
| 5 | 2,750 |
| 10 | 5,500 |
| 15 | 8,250 |
| 20 | 11,000 |
| 25 | 13,750 |
| 50 | 27,500.000001 |
| 100 | 55,000.000001 |
| 250 | 137,500.000003 |
| 500 | 275,000.000006 |
| 1000 | 550,000.000013 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Foot-Pound/Second (ft·lbf/s)
Power
Derived from the watt (1 W = 1 J/s).
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Horsepower (Mech) (hp)
Power
Mechanical horsepower is exactly 550 ft·lbf/s = 745.699 871 582 270 22 W.
Metric horsepower (PS) is 735.498 75 W — about 1.4 % lower.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Foot-Pound/Second to Horsepower (Mech)
To convert from Foot-Pound/Second (ft·lbf/s) to Horsepower (Mech) (hp), multiply the value by 0.0018181818.
Formula: hp = ft·lbf/s × 0.0018181818
Reverse: ft·lbf/s = hp × 550.0000000127
Step-by-Step Example
- Start with your value in Foot-Pound/Second. For example: 5 ft·lbf/s
- Multiply by the conversion factor: 5 x 0.0018181818
- The result is: 0.009091 hp
Foot-Pound/Second and Horsepower (Mech) Relationship
This calculation facilitates standardized conversion between recognized units of power. Since 1 Foot-Pound/Second represents a fraction of a Horsepower (Mech) (1 Horsepower (Mech) ≈ 550 Foot-Pound/Seconds), the Horsepower (Mech) is the larger measurement interval. Understanding the relationship between Foot-Pound/Second and Horsepower (Mech) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Foot-Pound/Second
The Foot-Pound/Second (symbol: ft·lbf/s) is a recognized unit in the US Customary / Imperial measurement framework, utilized within power applications for precision and standardized data representation.
Common uses of Foot-Pound/Second: power calculations, engineering and science, education.
About Horsepower (Mech)
The Horsepower (Mech) (symbol: hp) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.
Common uses of Horsepower (Mech): power calculations, engineering and science, education.
Frequently Asked Questions
- What is 3 Foot-Pound/Second in Horsepower (Mech)?
- 3 Foot-Pound/Second equals 0.005455 Horsepower (Mech).
- How many Horsepower (Mech)s are in 1 Foot-Pound/Second?
- There are exactly 0.0018181818 Horsepower (Mech)s in 1 Foot-Pound/Second. This means the conversion factor from Foot-Pound/Second to Horsepower (Mech) is 0.0018181818.
- What is the formula to convert Foot-Pound/Second to Horsepower (Mech)?
- The formula to convert Foot-Pound/Second to Horsepower (Mech) is: hp = ft·lbf/s × 0.0018181818. For example, to convert 10 Foot-Pound/Seconds to Horsepower (Mech)s, you would multiply 10 by 0.0018181818.
- What is a Foot-Pound/Second?
- The Foot-Pound/Second (symbol: ft·lbf/s) is a recognized unit in the US Customary / Imperial measurement framework, utilized within power applications for precision and standardized data representation.
- What is a Horsepower (Mech)?
- The Horsepower (Mech) (symbol: hp) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.
- What are the common uses of Foot-Pound/Second?
- The Foot-Pound/Second is commonly used in power calculations, engineering and science, education.
Related Power Conversions
Cite this page
UnitConvertLab. (2026). 3 Foot-Pound/Second to Horsepower (Mech). UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/3-foot_pound_per_second-to-horsepower_mech