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Power Converter
Convert between power units — watts, kilowatts, megawatts, mechanical/metric horsepower and BTU/hour.
Conversion Formula
1 kW = 1,000 W · 1 hp (mech) = 745.7 W · 1 hp (metric) = 735.5 W · 1 BTU/h = 0.293071 W
Common Power Converter Reference
| From | Equals | Also |
|---|
| 1 W | 0.001 kW | 0.00134102 hp |
| 1 kW | 1,000 W | 1.34102 hp |
| 1 hp (mech) | 745.7 W | 0.7457 kW |
| 1 hp (metric) | 735.5 W | 0.7355 kW |
| 1 BTU/h | 0.293071 W | 0.000393 hp |
| 1 MW | 1,000,000 W | 1,341.02 hp |
How to Convert Power
- Enter the value you want to convert.
- Choose the From unit.
- Choose the To unit.
- Click Convert to see the result instantly.
Frequently Asked Questions
How many watts are in a horsepower?+
1 mechanical horsepower = 745.7 watts. 1 metric horsepower = 735.5 watts.
What is the difference between mechanical and metric horsepower?+
Mechanical hp (US/UK) = 745.7 W. Metric hp (Europe, PS) = 735.5 W. They differ by about 1.4%.
How many watts does a microwave use?+
A typical microwave uses 600–1,500 W, usually 800 W cooking power.
How many kW is 1 horsepower?+
1 hp ≈ 0.7457 kW (mechanical) or 0.7355 kW (metric).
How do I convert BTU/h to watts?+
Multiply by 0.293071. Example: 12,000 BTU/h = 3,516.85 W.
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