Square Footage Calculator for HVAC / AC Unit Sizing
Construction & Home ImprovementCalculate room square footage to estimate the right size HVAC or AC unit.
Recommended BTU Capacity
Recommended cooling capacity for the room
Room Square Footage
300.0
Total room area in square feet
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Construction & Home Improvement calculators
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Construction & Home Improvement calculators
Frequently Asked Questions
How is this different from hvac-sizing-btu-calculator?
That tool also factors in ceiling height, sun exposure, and occupancy; this is a quick square-footage-based starting estimate.
What happens if my unit is undersized?
An undersized unit will run constantly without adequately cooling the space, increasing wear and energy costs.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Square Footage Calculator for HVAC / AC Unit Sizing on any site — no code needed. Customize colors, remove branding, and track usage.
