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Power Converter 2026 | Watts, Kilowatts, Horsepower, BTU Instant Calculator

Free Power Converter 2026. Convert watts, kilowatts, megawatts, horsepower, BTU/hour, and 20+ power units. Instant conversions for electrical engineering, HVAC, automotive, and renewable energy calculations.

Power Converter

Quick Reference

• 1 kW = 1,000 W
• 1 MW = 1,000,000 W
• 1 HP ≈ 746 W
• 1 kW ≈ 1.34 HP

About Power Converter

Convert between 11+ power measurement units. Used for electrical engineering, renewable energy, HVAC systems, and automotive applications. Instant, accurate conversions.

Help & FAQs

Frequently Asked Questions

Clear answers to common questions to help you use this calculator confidently.

What is power and how do I convert power units?

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Power is the rate of energy transfer. SI unit is watts (W). 1 watt = 1 joule per second. Common conversions: 1 kW = 1,000 watts, 1 horsepower ≈ 746 watts. Use converter to instantly switch between units.

How many watts is 1 horsepower?

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1 mechanical horsepower = 745.7 watts. 1 electrical horsepower = 746 watts. Slight difference due to measurement standards. Use converter for precise conversions.

What does BTU/hour mean?

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BTU/hour is thermal power unit (British Thermal Units per hour). Used for HVAC systems, heating/cooling capacity. 1 kW ≈ 3,412 BTU/hour. Common for US air conditioning ratings.

How many kilowatts in 1 megawatt?

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1 megawatt (MW) = 1,000 kilowatts (kW). Used for large power plants, wind turbines, solar farms. 1 MW powers approximately 750-1,000 homes.

Can I use this for renewable energy calculations?

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Yes! Perfect for solar panels (kW rating), wind turbines (MW capacity), and battery storage (kWh to watts). Convert between all common renewable energy power units instantly.

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