20 BTU (th) to Horsepower-Hour
Quick answer
20 BTU (th) (BTU) equals
0.007855 hp·h
To convert 20 BTU (th)s to Horsepower-Hours, multiply by 0.0003927518. Therefore, 20 BTU (th) (BTU) equals 0.007855 Horsepower-Hour (hp·h).
Formula: hp·h = BTU × 0.0003927518. Calculation: 20 × 0.0003927518 = 0.007855 hp·h.
Convert BTU (th) (BTU) to Horsepower-Hour (hp·h) online with our free unit converter. In energy, 1 BTU = 0.000393 hp·h. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting BTU (th) to Horsepower-Hour
- Step 1 — start with the formula. hp·h = BTU × 0.0003927518
- Step 2 — substitute your figure. 20 BTU × 0.0003927518
- Step 3 — read the result. 20 BTU = 0.007855 hp·h
- Step 4 — check it in reverse. BTU = hp·h × 2,546.1369921753 returns 19.9999 BTU, which matches the figure you started with.
Energy Converter
27 units available
20 BTU = 0.007855 hp·h
Formula:
hp·h = BTU × 0.0003927518With your value: 20 BTU = 0.00785504 hp·h
How big is that?
Everyday references on a logarithmic scale, all expressed in btu (th) so you can sanity-check the result.
Other BTU (th) to Horsepower-Hour conversions
BTU (th) to Horsepower-Hour Conversion Table
| BTU (th) (BTU) | Horsepower-Hour (hp·h) |
|---|---|
| 0.5 | 0.000196 |
| 1 | 0.000393 |
| 2 | 0.000786 |
| 5 | 0.001964 |
| 10 | 0.003928 |
| 15 | 0.005891 |
| 20 | 0.007855 |
| 25 | 0.009819 |
| 50 | 0.019638 |
| 100 | 0.039275 |
| 250 | 0.098188 |
| 500 | 0.196376 |
| 1000 | 0.392752 |
Horsepower-Hour to BTU (th) Conversion Table
| Horsepower-Hour (hp·h) | BTU (th) (BTU) |
|---|---|
| 0.5 | 1,273.068496 |
| 1 | 2,546.136992 |
| 2 | 5,092.273984 |
| 5 | 12,730.684961 |
| 10 | 25,461.369922 |
| 15 | 38,192.054883 |
| 20 | 50,922.739844 |
| 25 | 63,653.424804 |
| 50 | 127,306.849609 |
| 100 | 254,613.699218 |
| 250 | 636,534.248044 |
| 500 | 1,273,068.496088 |
| 1000 | 2,546,136.992175 |
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 (th) (BTU)
Energy
The International Table BTU is exactly 1055.055 852 62 J.
Thermochemical and 39 °F BTU definitions differ by up to 0.2 %.
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
Horsepower-Hour (hp·h)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
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 (th) to Horsepower-Hour
To convert from BTU (th) (BTU) to Horsepower-Hour (hp·h), multiply the value by 0.0003927518.
Formula: hp·h = BTU × 0.0003927518
Reverse: BTU = hp·h × 2,546.1369921753
Step-by-Step Example
- Start with your value in BTU (th). For example: 5 BTU
- Multiply by the conversion factor: 5 x 0.0003927518
- The result is: 0.001964 hp·h
BTU (th) and Horsepower-Hour Relationship
This calculation facilitates standardized conversion between recognized units of energy. Since 1 BTU (th) represents a fraction of a Horsepower-Hour (1 Horsepower-Hour ≈ 2,546.137 BTU (th)s), the Horsepower-Hour is the larger measurement interval. Understanding the relationship between BTU (th) and Horsepower-Hour is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About BTU (th)
The BTU (th) (symbol: BTU) is a recognized unit in the US Customary / Imperial measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of BTU (th): energy calculations, engineering and science, education.
About Horsepower-Hour
The Horsepower-Hour (symbol: hp·h) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of Horsepower-Hour: energy calculations, engineering and science, education.
Frequently Asked Questions
- What is 20 BTU (th) in Horsepower-Hour?
- 20 BTU (th) equals 0.007855 Horsepower-Hour.
- How many Horsepower-Hours are in 1 BTU (th)?
- There are exactly 0.0003927518 Horsepower-Hours in 1 BTU (th). This means the conversion factor from BTU (th) to Horsepower-Hour is 0.0003927518.
- What is the formula to convert BTU (th) to Horsepower-Hour?
- The formula to convert BTU (th) to Horsepower-Hour is: hp·h = BTU × 0.0003927518. For example, to convert 10 BTU (th)s to Horsepower-Hours, you would multiply 10 by 0.0003927518.
- What is a BTU (th)?
- The BTU (th) (symbol: BTU) is a recognized unit in the US Customary / Imperial measurement framework, utilized within energy applications for precision and standardized data representation.
- What is a Horsepower-Hour?
- The Horsepower-Hour (symbol: hp·h) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
- What are the common uses of BTU (th)?
- The BTU (th) is commonly used in energy calculations, engineering and science, education.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). 20 BTU (th) to Horsepower-Hour. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/20-btu-to-horsepower_hour