BTU/hour to Watts Converter
Enter a value to instantly convert between power units.
1 BTU/hour = 0.2931 Watt
Key Formulas
Kilowatt → Horsepower (mech)
hp = kW × 1.34102Horsepower (mech) → Kilowatt
kW = hp × 0.7457Watt → Kilowatt
kW = W × 0.001Kilowatt → Watt
W = kW × 1000Formula
W = BTU/h × 0.29307107One BTU per hour equals 0.293071 watts. This unit is universal in HVAC (heating, ventilation, air conditioning) for rating thermal power output of air conditioners and heaters. Understanding the conversion allows comparing HVAC systems specified in BTU/h (North American standard) with SI-based electrical power requirements in kilowatts.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
Standard room air conditioner: 12,000 BTU/h = 3.52 kW cooling capacity for window AC selection.
12000 BTU/h = 3516.85 W
Central air system rated 60,000 BTU/h = 17.6 kW for whole-house cooling efficiency.
60000 BTU/h = 17584.26 W
Portable space heater providing 5000 BTU/h = 1.47 kW thermal output for bedroom comfort.
5000 BTU/h = 1465.355 W
Commercial HVAC system rated 100,000 BTU/h = 29.3 kW for building code compliance.
100000 BTU/h = 29307.107 W