Convert BTU per hour to mechanical horsepower

1 BTU/h=0.000393hp

Use the converter below to change any BTU per hour value into mechanical horsepower instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.00039301

Conversion formula

Forward

mechanical horsepower = BTU per hour × 0.000393

Reverse

BTU per hour = mechanical horsepower × 2,544.43

Example: 10 BTU/h × 0.000393 = 0.00393 hp.

About both units

From

BTU per Hour

BTU/h

BTU per hour equals 0.293 watts. It is the standard power unit for US HVAC — air conditioners, heaters and boilers. A 24,000 BTU/h AC provides 7 kW of cooling.

Real-world: Small window AC: 5000 BTU/h. Central AC: 24,000 BTU/h. Home furnace: 80,000 BTU/h.

Read full btu per hour reference →

Mechanical Horsepower

Mechanical horsepower equals 745.7 watts — James Watt's 1782 definition based on horse labor. Used in US car engines, aircraft and some industrial equipment. US muscle cars quote hp; European cars usually kW or PS.

Real-world: Base Ford Mustang: ~310 hp. Lawn mower: 5 hp. Average car: 150–200 hp.

Read full mechanical horsepower reference →

BTU per Hour to Mechanical Horsepower conversion table

Common BTU per hour to mechanical horsepower values for quick reference.

BTU per Hour (BTU/h)	Mechanical Horsepower (hp)
1 BTU/h	0.000393 hp
5 BTU/h	0.001965 hp
10 BTU/h	0.00393 hp
50 BTU/h	0.01965 hp
100 BTU/h	0.0393 hp
500 BTU/h	0.1965 hp
1,000 BTU/h	0.393 hp
5,000 BTU/h	1.96507 hp
10,000 BTU/h	3.93015 hp
50,000 BTU/h	19.6507 hp

Tips & common mistakes

Quick tips

1 BTU/h = 0.293 W; 3412 BTU/h = 1 kW.
12,000 BTU/h = 1 ton of refrigeration.
Tons of AC rating: divide BTU/h by 12,000.

Avoid these

Confusing BTU (energy) with BTU/h (power) — same abbreviation in ads.
Mixing tons of AC and tons of weight — different concepts.
Using BTU/h for non-HVAC contexts.

Frequently asked questions

How many mechanical horsepower in a btu per hour?

One btu per hour equals 0.000393 mechanical horsepower.

How do I convert BTU per hour to mechanical horsepower?

Multiply the btu per hour value by 0.000393 to get the equivalent in mechanical horsepower.

What is 100 BTU per hour in mechanical horsepower?

100 BTU per hour equals 0.0393 mechanical horsepower.

Is a btu per hour bigger than a mechanical horsepower?

No. 1 btu per hour equals 0.000393 mechanical horsepower, so one btu per hour is smaller.

How to convert BTU per hour to mechanical horsepower without a calculator?

Multiply by 0 for a quick estimate; use a calculator for precise results.

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