Horsepower to BTU per Hour

Convert Horsepower to BTU per Hour instantly. Quick and accurate power conversion for electrical, mechanical, and HVAC applications.

What is the hp → BTU/h Converter?

This tool converts Horsepower (hp) to BTU per Hour (BTU/h) quickly and accurately. Whether you work with motors, appliances, HVAC systems, or engineering specs, it gives you instant, reliable results right in your browser.

Conversion factor: 1 hp = 2,544.43 BTU/h. Multiply any hp value by 2,544.43 to get BTU/h.

Understanding the Units

Horsepower (hp)

Mechanical horsepower used in the US and UK. Equal to 745.7 watts. Standard for rating vehicle engines and industrial motors.

BTU per Hour (BTU/h)

Common unit for HVAC systems in the United States. Used to rate air conditioners, heaters, and furnace capacity.

Common Applications

Automotive

Compare vehicle engine power ratings across regions and standards.

Industrial Motors

Convert motor specs for pumps, compressors, and machinery.

Electrical Sizing

Match motor horsepower to electrical and HVAC requirements.

How to Use

Converting hp to BTU/h takes just a few seconds:

Enter the value

Type your Horsepower value into the first input field.

Read the result

The BTU per Hour result appears instantly in the second field as you type.

Copy or swap

Use the copy button to grab the result, or the swap button (↔) to reverse the direction and convert BTU/h back to hp.

Conversion Formula

Formula: BTU/h = hp × 2,544.43. To reverse: hp = BTU/h × 0.000393.

Worked Example

For example, 1 hp × 2,544.43 = 2,544 BTU/h.

Quick Reference Table

Common hp-to-BTU/h conversions at a glance:

hp	BTU/h
1 hp	2,544 BTU/h
5 hp	12,722 BTU/h
10 hp	25,444 BTU/h
25 hp	63,611 BTU/h
50 hp	127,222 BTU/h
100 hp	254,443 BTU/h

Features

Instant Conversion

Results update as you type — no convert button needed. Calculations use precise factors for engineering-grade accuracy.

Bidirectional Input

Type in either field and the other updates automatically, so you can convert in whichever direction you need.

Copy Results

One click copies any value to your clipboard for documents, spreadsheets, or specifications.

Many Power Units

Switch the dropdowns to convert among Watts, Kilowatts, Megawatts, Horsepower, BTU/h, Tons of Refrigeration, and more.

Mobile Friendly

Works smoothly on desktop, tablet, and phone — convert power units anywhere.

100% Private

Every calculation runs locally in your browser. No data is stored or sent to any server.

Frequently Asked Questions

How do I convert hp to BTU/h?

Multiply the hp value by 2,544.43. For example, 1 hp = 2,544.43 BTU/h.

What is the formula for hp to BTU/h?

The formula is BTU/h = hp × 2,544.43. To convert back, use hp = BTU/h × 0.000393.

What is Horsepower?

Mechanical horsepower used in the US and UK. Equal to 745.7 watts. Standard for rating vehicle engines and industrial motors.

What is BTU per Hour?

Common unit for HVAC systems in the United States. Used to rate air conditioners, heaters, and furnace capacity.

Is this converter accurate?

Yes. It uses internationally recognized conversion factors with high precision, suitable for engineering, HVAC, and automotive work.

Can I convert other power units?

Yes. Use the dropdown menus to choose from many units including Watts, Kilowatts, Megawatts, Horsepower (hp/PS), BTU/h, Tons of Refrigeration, and more.