Area of a rectangular space — enter in any length unit.
Area (ft²) = Length (ft) × Width (ft)
For a rectangle or square room, square footage is simply the product of its length and width. Both measurements must be in feet before multiplying. If your measurements are in inches, divide each by 12 first. If in yards, multiply each by 3. The result is the area in square feet (ft²).
For other shapes:
Area = 14 ft × 12 ft = 168 ft²
Result: 168 square feet
A room that is 14 feet long and 12 feet wide has a total area of 168 square feet. If you were purchasing hardwood flooring at $4.50 per square foot, you would need approximately 168 ft², costing around $756 before adding the recommended 10% waste buffer (which would bring the total to about 185 ft² and ~$832).
Square footage (ft²) is one of the most commonly used measurements in real estate, construction, and home improvement. It describes the total two-dimensional area of a surface or room.
| From | To Square Feet | Multiply By | |------|---------------|-------------| | Square inches | Square feet | ÷ 144 | | Square yards | Square feet | × 9 | | Square meters | Square feet | × 10.764 | | Acres | Square feet | × 43,560 |
For L-shaped, T-shaped, or other complex rooms:
When purchasing flooring, tile, or carpet, industry professionals recommend adding 10% for standard rooms and 15% for rooms with diagonal cuts or complex layouts to account for waste from cutting and fitting.
According to the U.S. Census Bureau, the median size of a newly built single-family home in the United States is approximately 2,299 square feet as of recent data, though existing homes average somewhat smaller.
Use the formula: Area = π × r², where r is the radius (half the diameter). For example, a circular patio with a 10-foot diameter has a radius of 5 ft, so Area = 3.14159 × 5² ≈ 78.5 sq ft.
Square footage is one of the primary drivers of home value. Real estate appraisers use a price-per-square-foot metric to compare similar homes. In most U.S. markets, every additional 100 square feet can add thousands of dollars to a home's appraised value, depending on location and condition.
Use the formula: Area = (Base × Height) / 2. For a triangular garden plot with a base of 20 feet and a height of 15 feet, the area = (20 × 15) / 2 = 150 sq ft.
First convert each measurement from inches to feet by dividing by 12. Then multiply: Area (ft²) = (Length in inches ÷ 12) × (Width in inches ÷ 12). For example, a surface that is 60 inches × 48 inches = 5 ft × 4 ft = 20 sq ft.
A 10-foot by 10-foot room is exactly 100 square feet (10 × 10 = 100 ft²).
Divide the L-shape into two rectangles. Measure and calculate the area of each rectangle separately, then add them together. For example, if one section is 10×8 ft (80 ft²) and the other is 6×5 ft (30 ft²), the total is 110 ft².
There are 9 square feet in 1 square yard. To convert square yards to square feet, multiply by 9. To convert square feet to square yards, divide by 9.
Measure the length and width of each room, calculate the square footage, add all rooms together, then add 10% for waste and cutting. This gives you the total amount of flooring material to purchase.
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