AC Sizing Calculator

Formula

area×BTU/h per m²

Worked example

20m²×500 — 10,000 BTU/h

Quick answer

What does the AC Sizing Calculator do?

Estimate cooling capacity from room area using a user-configurable BTU per square meter factor.

What is the AC Sizing Calculator?

Estimate cooling capacity from room area using a user-configurable BTU per square meter factor. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses the deterministic formula area×BTU/h per m². Enter the required values, then review the displayed substitution and result breakdown to verify the calculation.

Worked example

20m²×500 10,000 BTU/h

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.