How it works
area = length × widthperimeter = 2 × (length + width) · 1 sq ft = 0.0929 sq m
- length
- room length in feet
- width
- room width in feet
- perimeter
- distance around the room
For flooring, work in square feet; for baseboard or trim, use the perimeter; for a European plan, use the square-metre figure.
Frequently asked questions
How do I calculate a room's area?
Multiply length by width. A 14 by 12 room is 168 square feet.
What is the perimeter used for?
Measuring skirting board, trim or coving, which run around the edge of the room.
How many square metres is 168 sq ft?
About 15.6 square metres.
Should I measure to the wall or the skirting?
Measure to the inside face of the walls for the floor area.