Calculate room size in square feet, square yards and square metres from room length and width.
Room area
Enter your measurements below. Results update automatically.
ft
ft
How this calculator works
For a rectangular room, multiply length by width. The calculator also converts the result to square yards and square metres for flooring, furniture planning and property measurements.
FormulaRoom length \u00d7 room width = floor area
Worked example
A 12 \u00d7 10 ft room is 120 sq ft, which is about 13.33 square yards or 11.15 square metres.
Useful answers
Room Size Calculator FAQs
How do I calculate the square feet of a room?
Multiply the room length in feet by the room width in feet.
How do I measure an L-shaped room?
Split it into two rectangles, calculate each rectangle and add the areas together.
How many square feet is a 12 × 12 room?
A 12 ft × 12 ft room is 144 square feet.
What is the difference between room dimensions and room area?
Dimensions describe the side lengths, such as 12 ft × 10 ft. Area is the surface inside those dimensions, such as 120 sq ft.