Air Conditioner BTU Calculator
Calculate the BTU capacity needed to cool your room effectively.
Air Conditioner BTU Calculator
Calculate the BTU capacity needed for your room
Formula
BTU = Area × 20 + AdjustmentsAdjusts for ceiling height, sun exposure, occupants, and kitchen use
How to Use This Calculator
- 1
Measure your room
Measure the length, width, and ceiling height of your room.
- 2
Assess conditions
Consider sun exposure, number of occupants, and if it is a kitchen.
- 3
Get BTU recommendation
The calculator provides the recommended BTU capacity and AC tonnage.
Frequently Asked Questions
How many BTU per square foot?
The general rule is 20 BTU per square foot, but this varies based on ceiling height, sun exposure, and other factors.
What size AC do I need for a 12x12 room?
A 12x12 room (144 sq ft) typically needs about 5,000-6,000 BTU, depending on conditions.
What is AC tonnage?
One ton of cooling equals 12,000 BTU. A 2-ton AC provides 24,000 BTU of cooling capacity.