Mechanical hp vs metric PS - which for my car?

Mechanical horsepower (hp, SAE) = 745.7 W. Metric PS (CV, DIN) = 735.5 W. US car ads use hp; European ads use PS. A 150 hp car is about 152 PS or 112 kW.

How many watts does my PC use?

Desktop PCs: 300-600 W. Gaming rigs: 700-1000+ W. Laptops: 30-80 W. Multiply watts by hours used to get kWh for your electricity bill.

BTU/h for furnaces - what size?

Furnace output is rated in BTU/h. A 2,000 sq ft home typically needs 60,000-100,000 BTU/h. 1 kW is about 3,412 BTU/h.

⚡ Power Converter

Microwave says 1200 W, car says 150 hp, furnace says 50,000 BTU/h. All are power — energy per second — but wildly different numbering.

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Last updated September 10, 2026 — conversions use exact ISO unit definitions.