Horsepower (Mech) to Foot-Pound/Second Converter

Power Converter

22 units available

Decimals:

From

To

550

1 hp = 550 ft·lbf/s

Formula:

ft·lbf/s = hp × 550.0000000127

With your value: 1 hp = 550.00000001 ft·lbf/s

How big is that?

Everyday references on a logarithmic scale, all expressed in horsepower (mech) so you can sanity-check the result.

LED bulb (1/83 your value)0.0121 hp

Laptop (1/11 your value)0.0872 hp

Your value1.00 hp

Microwave oven (1.3× your value)1.34 hp

Electric kettle (4.0× your value)4.02 hp

Family car engine (1.2e+2× your value)121 hp

Other Horsepower (Mech) to Foot-Pound/Second conversions

2 hp to ft·lbf/s 3 hp to ft·lbf/s 4 hp to ft·lbf/s 5 hp to ft·lbf/s 6 hp to ft·lbf/s 7 hp to ft·lbf/s 8 hp to ft·lbf/s

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

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

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.

Horsepower (Mech) (hp)

Power

Exact conversion

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

Foot-Pound/Second (ft·lbf/s)

Power

Exact conversion

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

How to Convert Horsepower (Mech) to Foot-Pound/Second

To convert from Horsepower (Mech) (hp) to Foot-Pound/Second (ft·lbf/s), multiply the value by 550.0000000127.

Formula: ft·lbf/s = hp × 550.0000000127

Reverse: hp = ft·lbf/s × 0.0018181818

Step-by-Step Example

Start with your value in Horsepower (Mech). For example: 5 hp
Multiply by the conversion factor: 5 x 550.0000000127
The result is: 2,750 ft·lbf/s

About Horsepower (Mech)

The horsepower (mech) (hp) is a unit of power. One horsepower (mech) equals 745.6998716 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

About Foot-Pound/Second

The foot-pound/second (ft·lbf/s) is a unit of power. One foot-pound/second equals 1.355817948 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: power calculations, engineering and science, education.

Frequently Asked Questions

How many Foot-Pound/Second are in 1 Horsepower (Mech)?

There are exactly 550.0000000127 Foot-Pound/Second in 1 Horsepower (Mech). This means the conversion factor from Horsepower (Mech) to Foot-Pound/Second is 550.0000000127.

What is the formula to convert Horsepower (Mech) to Foot-Pound/Second?

The formula to convert Horsepower (Mech) to Foot-Pound/Second is: ft·lbf/s = hp × 550.0000000127. For example, to convert 10 Horsepower (Mech) to Foot-Pound/Second, you would multiply 10 by 550.0000000127.

What is a Horsepower (Mech)?