Power Converter (Watts to Horsepower) Formula

Understand the math behind the power converter (watts to horsepower). Each variable explained with a worked example.

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Formulas Used

Horsepower

horsepower = value * 0.00134102

BTU per Hour

btu_hr = value * 3.41214

Variables

VariableDescriptionDefault
valuePower(W)746

How It Works

How to Convert Watts to Horsepower

Formulas

Horsepower = Watts × 0.00134102

BTU/hr = Watts × 3.41214

1 mechanical horsepower equals approximately 745.7 watts. 1 watt equals 3.41214 BTU per hour.

Worked Example

Convert 746 watts (approximately 1 horsepower) to hp and BTU/hr.

value = 746
  1. 01Horsepower = 746 × 0.00134102 = 1.0000 hp
  2. 02BTU/hr = 746 × 3.41214 = 2545.46 BTU/hr

Frequently Asked Questions

How do you convert watts to horsepower?

Multiply the power in watts by 0.00134102 to get mechanical horsepower. Alternatively, divide watts by 745.7.

How many watts are in 1 horsepower?

1 mechanical horsepower equals approximately 745.7 watts.

Learn More

Guide

Energy Conversion Guide: Joules, Calories, BTU, and Kilowatt-Hours

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