Floor area, wall area, perimeter and volume of a square, rectangular or L-shaped room.
How this works
Floor area = length x width, minus the cut-out corner for an L-shape. Perimeter of an L-shape equals the full rectangle. Volume = area x height and wall area = perimeter x height. 1 m² = 10.764 sq ft.
Questions people ask
How do I use the Room Area and Volume Calculator?
Fill in the fields, starting with “Room shape”, “Length” and “Width”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Room Area and Volume Calculator free?
Yes. The Room Area and Volume Calculator is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.