Foot-pounds per Second to Horsepower
Convert foot-pounds per second to horsepower instantly. 1 ft·lb/s = 0.0018181818 hp. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert foot-pounds per second to horsepower
To convert foot-pounds per second to horsepower, divide by 550 (multiply by 0.0018181818). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
hp = ft·lb/s × 0.0018181818
Foot-pounds per Second to Horsepower conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Foot-pounds per Second | Horsepower |
|---|---|
| 1 ft·lb/s | 0.001818 hp |
| 2 ft·lb/s | 0.003636 hp |
| 3 ft·lb/s | 0.005455 hp |
| 5 ft·lb/s | 0.009091 hp |
| 10 ft·lb/s | 0.018182 hp |
| 20 ft·lb/s | 0.036364 hp |
| 25 ft·lb/s | 0.045455 hp |
| 50 ft·lb/s | 0.090909 hp |
| 100 ft·lb/s | 0.181818 hp |
| 500 ft·lb/s | 0.909091 hp |
| 1,000 ft·lb/s | 1.818182 hp |
What is a foot-pounds per second?
The unit horsepower was originally defined against.
What is a horsepower?
Mechanical horsepower, defined as 550 foot-pounds per second.
The formula
hp = ft·lb/s × 0.0018181818
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Foot-pounds per Second to Horsepower
- Type the number of foot-pounds per second you want to convert.
- Read the result in horsepower straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked horsepower to foot-pounds per second page.
Foot-pounds per Second to Horsepower — frequently asked questions
How many horsepower are in a foot-pounds per second?
One foot-pounds per second equals 0.0018181818 hp. hp = ft·lb/s × 0.0018181818
What is the formula to convert foot-pounds per second to horsepower?
The formula is hp = ft·lb/s × 0.0018181818. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert horsepower back to foot-pounds per second?
Divide instead of multiplying: one horsepower is 550 ft·lb/s. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this foot-pounds per second to horsepower free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the foot-pounds per second to horsepower.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error