Horsepower (Mech) to BTU/Second Converter

Power Converter

22 units available

Decimals:

From

To

0.706787

1 hp = 0.706787 BTU/s

Formula:

BTU/s = hp × 0.7067871049

With your value: 1 hp = 0.7067871 BTU/s

How big is that?

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

LED bulb (1/83 your value)0.0121 hp

Laptop (1/11 your value)0.0872 hp

Your value1.00 hp

Microwave oven (1.3× your value)1.34 hp

Electric kettle (4.0× your value)4.02 hp

Family car engine (1.2e+2× your value)121 hp

Other Horsepower (Mech) to BTU/Second conversions

2 hp to BTU/s 3 hp to BTU/s 4 hp to BTU/s 5 hp to BTU/s 6 hp to BTU/s 7 hp to BTU/s 8 hp to BTU/s

Horsepower (Mech) to BTU/Second Conversion Table

Horsepower (Mech) (hp)	BTU/Second (BTU/s)
0.5	0.353394
1	0.706787
2	1.413574
5	3.533936
10	7.067871
15	10.601807
20	14.135742
25	17.669678
50	35.339355
100	70.67871
250	176.696776
500	353.393552
1000	706.787105

BTU/Second to Horsepower (Mech) Conversion Table

BTU/Second (BTU/s)	Horsepower (Mech) (hp)
0.5	0.707427
1	1.414853
2	2.829706
5	7.074266
10	14.148532
15	21.222798
20	28.297064
25	35.37133
50	70.74266
100	141.48532
250	353.713301
500	707.426602
1000	1,414.853204

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 (Mech) (hp)

Power

Exact conversion

Mechanical horsepower is exactly 550 ft·lbf/s = 745.699 871 582 270 22 W.

Metric horsepower (PS) is 735.498 75 W — about 1.4 % lower.

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/Second (BTU/s)

Power

Exact conversion

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 Horsepower (Mech) to BTU/Second

To convert from Horsepower (Mech) (hp) to BTU/Second (BTU/s), multiply the value by 0.7067871049.

Formula: BTU/s = hp × 0.7067871049

Reverse: hp = BTU/s × 1.4148532041

Step-by-Step Example

Start with your value in Horsepower (Mech). For example: 5 hp
Multiply by the conversion factor: 5 x 0.7067871049
The result is: 3.533936 BTU/s

About Horsepower (Mech)

The horsepower (mech) (hp) is a unit of power. One horsepower (mech) equals 745.6998716 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

About BTU/Second

The btu/second (BTU/s) is a unit of power. One btu/second equals 1055.055853 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

Frequently Asked Questions

How many BTU/Second are in 1 Horsepower (Mech)?

There are exactly 0.7067871049 BTU/Second in 1 Horsepower (Mech). This means the conversion factor from Horsepower (Mech) to BTU/Second is 0.7067871049.

What is the formula to convert Horsepower (Mech) to BTU/Second?

The formula to convert Horsepower (Mech) to BTU/Second is: BTU/s = hp × 0.7067871049. For example, to convert 10 Horsepower (Mech) to BTU/Second, you would multiply 10 by 0.7067871049.

What is a Horsepower (Mech)?