How do I calculate square footage of a rectangle?

Multiply the length by the width, both in feet. A 12 ft × 10 ft room = 120 square feet.

How many square feet are in a square yard?

9 square feet = 1 square yard. To convert sq ft to sq yd, divide by 9.

How do I measure an L-shaped room?

Split the L-shape into two rectangles. Measure each rectangle separately and add the areas together.

Square Footage Calculator

Quick answer: Enter room dimensions to calculate square footage for flooring, painting, or landscaping projects.

Calculate the area of any room or outdoor space in square feet. Choose your shape — rectangle, circle, triangle, or L-shape — enter the dimensions, and instantly see the area in square feet, square yards, square meters, and acres.

Last reviewed: April 2026Report an error

Length (ft)

Width (ft)

Square Footage

120 sq ft

Area: 120 sq ft (13.33 sq yd · 11.15 sq m · 0.00275 acres).

Square Feet

120

Square Yards

13.33

Square Meters

11.15

Acres

0.00275

How to Use This Square Footage Calculator

1Select your room shape.
2Enter the dimensions in feet.
3Read the area in square feet, square yards, and square meters.
4Use the result to estimate material quantities for flooring, paint, or other projects.

Frequently Asked Questions

: Multiply the length by the width, both in feet. A 12 ft × 10 ft room = 120 square feet.
: 9 square feet = 1 square yard. To convert sq ft to sq yd, divide by 9.
: Split the L-shape into two rectangles. Measure each rectangle separately and add the areas together.

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Square Footage Calculator

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