BTU Calculator: Interactive Room Size Calculator
Not sure which BTU rating you need for your room? Our interactive calculator below shows you exactly how 6,000, 9,000, and 12,000 BTU air conditioning units cover different room sizes. Simply click the BTU buttons to see the estimated coverage area and find the perfect match for your space. Shop the best value air conditioning units here.
BTU Coverage Calculator
Estimated cooling coverage for different BTU ratings
15m²
12m²
8m²
10m²
12m²
18m²
6,000 BTU Unit Selected
Coverage Area
Estimated up to 15m² (160 sq ft)*
Best For
Single bedroom or small living space
Cooling Power
Light to moderate cooling
Room Types
Bedrooms, small offices
What is BTU?
BTU (British Thermal Unit) measures how much heat an air conditioner can remove from a room per hour. Higher BTU ratings mean more cooling power and the ability to cool larger spaces. Coverage depends on factors like ceiling height, insulation, sun exposure, and room layout. *Always check individual product specifications for exact coverage recommendations, as actual performance may vary based on room conditions.