BTU per Hour to Foot-pounds per Second
Convert btu per hour to foot-pounds per second instantly. 1 BTU/h = 0.2161581284 ft·lb/s. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert btu per hour to foot-pounds per second
To convert btu per hour to foot-pounds per second, divide by 4.6262428684 (multiply by 0.2161581284). 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.
ft·lb/s = BTU/h × 0.2161581284
BTU per Hour to Foot-pounds per Second conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| BTU per Hour | Foot-pounds per Second |
|---|---|
| 1 BTU/h | 0.216158 ft·lb/s |
| 2 BTU/h | 0.432316 ft·lb/s |
| 3 BTU/h | 0.648474 ft·lb/s |
| 5 BTU/h | 1.080791 ft·lb/s |
| 10 BTU/h | 2.161581 ft·lb/s |
| 20 BTU/h | 4.323163 ft·lb/s |
| 25 BTU/h | 5.403953 ft·lb/s |
| 50 BTU/h | 10.807906 ft·lb/s |
| 100 BTU/h | 21.615813 ft·lb/s |
| 500 BTU/h | 108.079064 ft·lb/s |
| 1,000 BTU/h | 216.158128 ft·lb/s |
What is a btu per hour?
The rating unit for air conditioners and boilers in the US.
What is a foot-pounds per second?
The unit horsepower was originally defined against.
The formula
ft·lb/s = BTU/h × 0.2161581284
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 BTU per Hour to Foot-pounds per Second
- Type the number of btu per hour you want to convert.
- Read the result in foot-pounds per second 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 foot-pounds per second to btu per hour page.
BTU per Hour to Foot-pounds per Second — frequently asked questions
How many foot-pounds per second are in a btu per hour?
One btu per hour equals 0.2161581284 ft·lb/s. ft·lb/s = BTU/h × 0.2161581284
What is the formula to convert btu per hour to foot-pounds per second?
The formula is ft·lb/s = BTU/h × 0.2161581284. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert foot-pounds per second back to btu per hour?
Divide instead of multiplying: one foot-pounds per second is 4.6262428684 BTU/h. 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 btu per hour to foot-pounds per second 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 btu per hour to foot-pounds per second.
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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