Horsepower-Hour to BTU (IT) Converter

Energy Converter

27 units available

Decimals:

From

To

2,544.433578

1 hp·h = 2,544.433578 BTU (IT)

Formula:

BTU (IT) = hp·h × 2,544.4335776477

With your value: 1 hp·h = 2,544.43357765 BTU (IT)

How big is that?

Everyday references on a logarithmic scale, all expressed in horsepower-hour so you can sanity-check the result.

Heartbeat (1/2.7e+6 your value)3.73e-7 hp·h

AA battery charge (1/2.7e+2 your value)0.00373 hp·h

Slice of bread (1/9.6 your value)0.104 hp·h

Your value1.00 hp·h

Daily food intake (3.1× your value)3.13 hp·h

Litre of petrol (13× your value)12.7 hp·h

Other Horsepower-Hour to BTU (IT) conversions

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

Horsepower-Hour to BTU (IT) Conversion Table

Horsepower-Hour (hp·h)	BTU (IT) (BTU (IT))
0.5	1,272.216789
1	2,544.433578
2	5,088.867155
5	12,722.167888
10	25,444.335776
15	38,166.503665
20	50,888.671553
25	63,610.839441
50	127,221.678882
100	254,443.357765
250	636,108.394412
500	1,272,216.788824
1000	2,544,433.577648

BTU (IT) to Horsepower-Hour Conversion Table

BTU (IT) (BTU (IT))	Horsepower-Hour (hp·h)
0.5	0.000197
1	0.000393
2	0.000786
5	0.001965
10	0.00393
15	0.005895
20	0.00786
25	0.009825
50	0.019651
100	0.039301
250	0.098254
500	0.196507
1000	0.393015

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.

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

BTU (IT) (BTU (IT))

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 Horsepower-Hour to BTU (IT)

To convert from Horsepower-Hour (hp·h) to BTU (IT) (BTU (IT)), multiply the value by 2,544.4335776477.

Formula: BTU (IT) = hp·h × 2,544.4335776477

Reverse: hp·h = BTU (IT) × 0.0003930148

Step-by-Step Example

Start with your value in Horsepower-Hour. For example: 5 hp·h
Multiply by the conversion factor: 5 x 2,544.4335776477
The result is: 12,722.167888 BTU (IT)

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.

About BTU (IT)

The btu (it) (BTU (IT)) is a unit of energy and work. One btu (it) equals 1055.055853 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 BTU (IT) are in 1 Horsepower-Hour?

There are exactly 2,544.4335776477 BTU (IT) in 1 Horsepower-Hour. This means the conversion factor from Horsepower-Hour to BTU (IT) is 2,544.4335776477.

What is the formula to convert Horsepower-Hour to BTU (IT)?

The formula to convert Horsepower-Hour to BTU (IT) is: BTU (IT) = hp·h × 2,544.4335776477. For example, to convert 10 Horsepower-Hour to BTU (IT), you would multiply 10 by 2,544.4335776477.

What is a Horsepower-Hour?