Watts to Horsepower Converter
Convert watts to horsepower for motors, appliances, and engineering power ratings.
How It Works
Formula: W to hp = value ÷ 745.699872
Example: 1000 W = 1.341022 hp
Note: 1 mechanical horsepower equals 745.7 watts, the conversion for US motor and appliance power ratings.
Common Uses
Rounding Rule
Rounded to 4 decimal places
Error Margin
±0.0001 hp
Precision Guidance
For motors, round to 2 decimals. For engineering, keep 3-4 decimals.
Common Mistakes
Mechanical horsepower (745.7 W) differs from metric horsepower/PS (735.5 W). Confirm the standard a spec uses.
Frequently Asked Questions
What is 1000 watts in horsepower?
1000 watts equals 1.3410 horsepower using the conversion 1 hp = 745.7 W.
How do I convert watts to hp?
Divide the watt value by 745.7. For example, 1500 W ÷ 745.7 = 2.012 hp.
How many watts is 1 hp?
1 mechanical horsepower equals 745.7 watts.
Is this mechanical or metric horsepower?
This uses mechanical horsepower (745.7 W). Metric horsepower (PS) is 735.5 W.
Deep Dive Guide
Watts to HP: Electric Motor and Tool Power for US Buyers
Convert watts to hp for US electric motors, shop tools, and appliances. 1 watt equals 0.00134102 hp, and 1 mechanical horsepower equals 745.7 watts.
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Last Updated 2026 | This converter was reviewed for accuracy