Power Converter

1. Type any value. Enter a number in any unit field and all 7 units update at once. No button to press. The default shows 1 horsepower and its equivalents.
2. Electricity and appliances. Home appliances are rated in watts (W) or kilowatts (kW). A typical microwave uses 1,000 W (1 kW). Type 1000 in the Watt field to see the equivalent in horsepower and BTU/hour.
3. Engine power. Car engines are rated in horsepower (hp). Type the horsepower of any engine to instantly compare it in kilowatts, which is the standard in Europe and many international contexts.
4. HVAC and heating. Air conditioners and heaters are rated in BTU/hour (BTU/hr). A 12,000 BTU/hr window AC equals about 3,517 W (3.517 kW) of heat removal capacity.

Example: a 200 hp sports car engine. Type 200 in the Horsepower field to see: 149,140 W, 149.14 kW, 0.14914 MW, 509,063 BTU/hr, 35,645 cal/s, 110,000 ft·lb/s.

All conversions use watts (W) as the base unit:

Value in watts = Input × toWatts factor
Result in target unit = Value in watts ÷ toWatts factor

Key relationships: 1 hp = 550 ft·lb/s (the original Watt definition). 1 kW = 3,412.14 BTU/hr (useful for HVAC calculations). A "ton of refrigeration" = 12,000 BTU/hr = 3,516.85 W, used to rate commercial air conditioning capacity.