Foot-pounds per Second to BTU per Hour
Convert foot-pounds per second to btu per hour instantly. 1 ft·lb/s = 4.6262428684 BTU/h. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert foot-pounds per second to btu per hour
To convert foot-pounds per second to btu per hour, multiply by 4.6262428684. 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.
BTU/h = ft·lb/s × 4.6262428684
Foot-pounds per Second to BTU per Hour conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Foot-pounds per Second | BTU per Hour |
|---|---|
| 1 ft·lb/s | 4.626243 BTU/h |
| 2 ft·lb/s | 9.252486 BTU/h |
| 3 ft·lb/s | 13.878729 BTU/h |
| 5 ft·lb/s | 23.131214 BTU/h |
| 10 ft·lb/s | 46.262429 BTU/h |
| 20 ft·lb/s | 92.524857 BTU/h |
| 25 ft·lb/s | 115.656072 BTU/h |
| 50 ft·lb/s | 231.312143 BTU/h |
| 100 ft·lb/s | 462.624287 BTU/h |
| 500 ft·lb/s | 2,313.12 BTU/h |
| 1,000 ft·lb/s | 4,626.24 BTU/h |
What is a foot-pounds per second?
The unit horsepower was originally defined against.
What is a btu per hour?
The rating unit for air conditioners and boilers in the US.
The formula
BTU/h = ft·lb/s × 4.6262428684
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 BTU per Hour
- Type the number of foot-pounds per second you want to convert.
- Read the result in btu per hour 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 btu per hour to foot-pounds per second page.
Foot-pounds per Second to BTU per Hour — frequently asked questions
How many btu per hour are in a foot-pounds per second?
One foot-pounds per second equals 4.6262428684 BTU/h. BTU/h = ft·lb/s × 4.6262428684
What is the formula to convert foot-pounds per second to btu per hour?
The formula is BTU/h = ft·lb/s × 4.6262428684. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert btu per hour back to foot-pounds per second?
Divide instead of multiplying: one btu per hour is 0.2161581284 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 btu per hour 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
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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