ToolGrid AIRoom Area and Perimeter
Calculate floor area and wall perimeter for a rectangular room.
Runs entirely in your browser — your selected files are not uploaded by this tool. Device-provided speech voices may use online services.
About this free room area and perimeter tool
Calculate floor area and wall perimeter for a rectangular room. Calculators answer a defined arithmetic question using the values you supply. Keep units and currencies consistent, choose the correct starting amount and inspect the assumptions before using a result. Estimates do not replace a lender quotation, an official tax rate, a medical assessment or a jurisdiction-specific deadline rule.
A practical example
A concrete example uses length (m): 5; width (m): 4. The result is Floor area (m²): 20 Perimeter (m): 18.
Before you rely on the result
Use consistent measurements and check packaging or manufacturer guidance. The estimate excludes unusual shapes, installation losses and site-specific requirements unless entered.