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Power and Energy

Wtohp

Convert watts (W) to mechanical horsepower (hp).

Factor1 W = 0.001341022 hp

Converter

W

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

Result
13.4102hp

Rendered to 6 significant figures.

Formula

Formula
hp = W × 0.001341022

Multiply any value in watts by 0.001341022 to obtain the value in mechanical horsepower.

Worked example

Convert 10000 W to hp.

  1. 01Start with 10000 W.
  2. 02Multiply by the conversion factor: 10000 × 0.001341022 = 13.4102 hp.
Result10000 W = 13.4102 hp

Conversion table

Whp
10.001341
20.002682
50.0067051
100.01341
200.02682
500.067051
1000.1341
2000.2682
5000.67051
10001.341

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from W to hp?
1 W equals 0.001341022 hp. To convert, multiply the value in watts by 0.001341022.
How do I convert 1 W to hp?
1 W = 0.00134102 hp. For any value, multiply by 0.001341022.
How do I convert hp back to W?
Divide by the same factor — or equivalently, multiply by 745.6999. So 1 hp = 745.7 W.
When would I need to convert watt 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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