15 BTU/Hour to Foot-Pound/Second
Quick answer
15 BTU/Hour (BTU/h) equals
3.242372 ft·lbf/s
To convert 15 BTU/Hours to Foot-Pound/Seconds, multiply by 0.2161581284. Therefore, 15 BTU/Hour (BTU/h) equals 3.242372 Foot-Pound/Second (ft·lbf/s).
Formula: ft·lbf/s = BTU/h × 0.2161581284. Calculation: 15 × 0.2161581284 = 3.242372 ft·lbf/s.
Convert BTU/Hour (BTU/h) to Foot-Pound/Second (ft·lbf/s) online with our free unit converter. In power, 1 BTU/h = 0.216158 ft·lbf/s. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting BTU/Hour to Foot-Pound/Second
- Step 1 — start with the formula. ft·lbf/s = BTU/h × 0.2161581284
- Step 2 — substitute your figure. 15 BTU/h × 0.2161581284
- Step 3 — read the result. 15 BTU/h = 3.242372 ft·lbf/s
- Step 4 — check it in reverse. BTU/h = ft·lbf/s × 4.6262428683 returns 15 BTU/h, which matches the figure you started with.
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15 BTU/h = 3.242372 ft·lbf/s
Formula:
ft·lbf/s = BTU/h × 0.2161581284With your value: 15 BTU/h = 3.24237193 ft·lbf/s
How big is that?
Everyday references on a logarithmic scale, all expressed in btu/hour so you can sanity-check the result.
Other BTU/Hour to Foot-Pound/Second conversions
BTU/Hour to Foot-Pound/Second Conversion Table
| BTU/Hour (BTU/h) | Foot-Pound/Second (ft·lbf/s) |
|---|---|
| 0.5 | 0.108079 |
| 1 | 0.216158 |
| 2 | 0.432316 |
| 5 | 1.080791 |
| 10 | 2.161581 |
| 15 | 3.242372 |
| 20 | 4.323163 |
| 25 | 5.403953 |
| 50 | 10.807906 |
| 100 | 21.615813 |
| 250 | 54.039532 |
| 500 | 108.079064 |
| 1000 | 216.158128 |
Foot-Pound/Second to BTU/Hour Conversion Table
| Foot-Pound/Second (ft·lbf/s) | BTU/Hour (BTU/h) |
|---|---|
| 0.5 | 2.313121 |
| 1 | 4.626243 |
| 2 | 9.252486 |
| 5 | 23.131214 |
| 10 | 46.262429 |
| 15 | 69.393643 |
| 20 | 92.524857 |
| 25 | 115.656072 |
| 50 | 231.312143 |
| 100 | 462.624287 |
| 250 | 1,156.560717 |
| 500 | 2,313.121434 |
| 1000 | 4,626.242868 |
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.
BTU/Hour (BTU/h)
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
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
How to Convert BTU/Hour to Foot-Pound/Second
To convert from BTU/Hour (BTU/h) to Foot-Pound/Second (ft·lbf/s), multiply the value by 0.2161581284.
Formula: ft·lbf/s = BTU/h × 0.2161581284
Reverse: BTU/h = ft·lbf/s × 4.6262428683
Step-by-Step Example
- Start with your value in BTU/Hour. For example: 5 BTU/h
- Multiply by the conversion factor: 5 x 0.2161581284
- The result is: 1.080791 ft·lbf/s
BTU/Hour and Foot-Pound/Second Relationship
Both BTU/Hour and Foot-Pound/Second belong to the US Customary / Imperial system, making this an intra-system conversion within power. Since 1 BTU/Hour represents a fraction of a Foot-Pound/Second (1 Foot-Pound/Second ≈ 4.6262 BTU/Hours), the Foot-Pound/Second is the larger measurement interval. Understanding the relationship between BTU/Hour and Foot-Pound/Second is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About BTU/Hour
The BTU/Hour (symbol: BTU/h) is a recognized unit in the US Customary / Imperial measurement framework, utilized within power applications for precision and standardized data representation.
Common uses of BTU/Hour: power calculations, engineering and science, education.
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.
Frequently Asked Questions
- What is 15 BTU/Hour in Foot-Pound/Second?
- 15 BTU/Hour equals 3.242372 Foot-Pound/Second.
- How many Foot-Pound/Seconds are in 1 BTU/Hour?
- There are exactly 0.2161581284 Foot-Pound/Seconds in 1 BTU/Hour. This means the conversion factor from BTU/Hour to Foot-Pound/Second is 0.2161581284.
- What is the formula to convert BTU/Hour to Foot-Pound/Second?
- The formula to convert BTU/Hour to Foot-Pound/Second is: ft·lbf/s = BTU/h × 0.2161581284. For example, to convert 10 BTU/Hours to Foot-Pound/Seconds, you would multiply 10 by 0.2161581284.
- What is a BTU/Hour?
- The BTU/Hour (symbol: BTU/h) is a recognized unit in the US Customary / Imperial measurement framework, utilized within power applications for precision and standardized data representation.
- 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 are the common uses of BTU/Hour?
- The BTU/Hour is commonly used in power calculations, engineering and science, education.
Related Power Conversions
Cite this page
UnitConvertLab. (2026). 15 BTU/Hour to Foot-Pound/Second. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/15-btu_per_hour-to-foot_pound_per_second