BTU (th) to Horsepower-Hour Converter

Energy Converter

27 units available

Decimals:

From

To

0.000393

1 BTU = 0.000393 hp·h

Formula:

hp·h = BTU × 0.0003927518

With your value: 1 BTU = 0.00039275 hp·h

How big is that?

Everyday references on a logarithmic scale, all expressed in btu (th) so you can sanity-check the result.

Heartbeat (1/1.1e+3 your value)0.000948 BTU

Your value1.00 BTU

AA battery charge (9.5× your value)9.48 BTU

Slice of bread (2.7e+2× your value)266 BTU

Daily food intake (8.0e+3× your value)7.97e+3 BTU

Litre of petrol (3.2e+4× your value)3.24e+4 BTU

Other BTU (th) to Horsepower-Hour conversions

2 BTU to hp·h 3 BTU to hp·h 4 BTU to hp·h 5 BTU to hp·h 6 BTU to hp·h 7 BTU to hp·h 8 BTU to hp·h

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

Exact conversion

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

Exact conversion

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

About BTU (th)

The btu (th) (BTU) is a unit of energy and work. One btu (th) equals 1054.35 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Horsepower-Hour

The horsepower-hour (hp·h) is a unit of energy and work. One horsepower-hour equals 2.684520 × 10^+6 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Horsepower-Hour are in 1 BTU (th)?

There are exactly 0.0003927518 Horsepower-Hour 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) to Horsepower-Hour, you would multiply 10 by 0.0003927518.

What is a BTU (th)?