BTU per Hour to Horsepower Converter

ConversionEdited by Hemant Kumar and Anjita Rai, founders · How we checkUpdated Free · No sign-up

Quick answer: To convert BTU per Hour to horsepower, multiply by 0.0003930148. For example, 10 Btu/h is 0.003930148 hp. One btu per hour equals 0.0003930148 hp.

Use the BTU per Hour to Horsepower Converter

BTU per Hour to Horsepower formula and what each symbol means

hp = Btu/h × 0.0003930148

Symbols used in the formula
SymbolMeaning
Btu/hBTU per hour
hpHorsepower

BTU per Hour to Horsepower examples

1 Btu/h

1 Btu/h × 0.0003930148 = 0.0003930148 hp.

10 Btu/h

10 Btu/h × 0.0003930148 = 0.003930148 hp.

100 Btu/h

100 Btu/h × 0.0003930148 = 0.03930148 hp.

BTU per Hour compared with Horsepower

One hp is 2,544 times as large as one Btu/h, so your number gets smaller when you convert BTU per Hour to horsepower and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.

About BTU per Hour and horsepower

Horsepower (hp): Mechanical horsepower, about 745.7 watts.

Where BTU per Hour to horsepower conversions are used

Power stations and the grid are described in megawatts and gigawatts. Engines and motors are rated in kilowatts or horsepower, depending on the market.

How to calculate BTU per Hour to Horsepower step by step

  1. Enter the value in Btu/h (the starting unit).
  2. Multiply by 0.0003930148, because 1 Btu/h = 0.0003930148 hp.
  3. The product is the value in hp. To go back, divide by 0.0003930148 or multiply by 2,544.434.

Popular power conversions

How to read your BTU per Hour to Horsepower result

Quick estimate: multiply by about 0.0004 to get horsepower from BTU per Hour; this is within 1.8% of the exact factor. Power is energy per time.

BTU PER HOURHORSEPOWER
10.0003930148
20.0007860296
50.001965074
100.003930148
200.007860296
500.01965074
1000.03930148
1,0000.3930148

Horsepower to BTU per Hour: quick table

HORSEPOWERBTU PER HOUR
12,544.434
512,722.17
1025,444.34
2563,610.84
50127,221.7
100254,443.4
250636,108.4
5001,272,217

Common mistakes when calculating BTU per Hour to Horsepower

  • Using Btu/h for heating loads without noting that 1 ton of refrigeration is 12,000 Btu/h.
  • Dividing when you should multiply: from Btu/h to hp multiply by 0.0003930148; from hp to Btu/h divide by 0.0003930148.

BTU per Hour to Horsepower FAQ

How many hp are in 1 Btu/h?

1 Btu/h equals 0.0003930148 hp.

How many Btu/h are in 1 hp?

1 hp equals 2,544.434 Btu/h.

Is 1 Btu/h = 0.0003930148 hp an exact conversion?

The factor is shown rounded to 7 significant figures (0.0003930148). The calculator above uses more digits.

How do I convert Horsepower back to BTU per Hour?

Use the Horsepower to BTU per Hour converter, or apply the reverse formula: Btu/h = hp × 2,544.434.

How can I estimate BTU per Hour to horsepower in my head?

Quick estimate: multiply by about 0.0004 to get horsepower from BTU per Hour; this is within 1.8% of the exact factor.

What is 40 Btu/h in horsepower?

40 Btu/h = 0.01572059 hp (since 40 × 0.0003930148).

What is 200 Btu/h in horsepower?

200 Btu/h = 0.07860296 hp (since 200 × 0.0003930148).

What is 3 Btu/h in horsepower?

3 Btu/h = 0.001179044 hp (since 3 × 0.0003930148).

How many decimals should I keep when converting Btu/h to hp?

Match the precision of your original measurement. For example, 0.003930148 hp rounds to 0.00393 hp at 3 significant figures; keep more digits only for engineering or scientific work.

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Method, review and disclaimer

Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors