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Power and Energy

BTU/hrtohp

Convert British thermal units per hour (BTU/hr) to mechanical horsepower (hp).

Factor1 BTU/hr = 0.0003930148 hp

Converter

BTU/hr

Accepts numbers or expressions, e.g. 150 + 14.7

Result
3.93015hp

Rendered to 6 significant figures.

Formula

Formula
hp = BTU/hr × 0.0003930148

Multiply any value in British thermal units per hour by 0.0003930148 to obtain the value in mechanical horsepower.

Worked example

Convert 10000 BTU/hr to hp.

  1. 01Start with 10000 BTU/hr.
  2. 02Multiply by the conversion factor: 10000 × 0.0003930148 = 3.93015 hp.
Result10000 BTU/hr = 3.93015 hp

Conversion table

BTU/hrhp
10.00039301
20.00078603
50.0019651
100.0039301
200.0078603
500.019651
1000.039301
2000.078603
5000.19651
10000.39301

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/hr to hp?
1 BTU/hr equals 0.0003930148 hp. To convert, multiply the value in British thermal units per hour by 0.0003930148.
How do I convert 1 BTU/hr to hp?
1 BTU/hr = 0.000393015 hp. For any value, multiply by 0.0003930148.
How do I convert hp back to BTU/hr?
Divide by the same factor — or equivalently, multiply by 2544.434. So 1 hp = 2544.43 BTU/hr.
When would I need to convert British thermal unit per hour to mechanical horsepower?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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