Measurement Tools
Measure any rectangular space by entering length and width. Calculate square footage, area in other units, and optional total cost.
Square Footage
120.00sq ft
Enter length and width in the same unit. The calculator converts to square metres, square yards, and optionally calculates total cost.
Square footage is the area of a space measured in square feet (sq ft). It represents the total amount of floor or surface area. For example, a room that is 12 feet long and 10 feet wide has 120 square feet. Square footage is essential for estimating material costs, planning renovations, and comparing property sizes.
Select your preferred unit (feet or metres). Enter the length and width of your space. Optionally enter the price per square foot to calculate total cost. The calculator instantly displays square footage, converts to other units, shows perimeter, and computes total cost if a price is provided.
Area = Length × Width. Perimeter = 2 × (Length + Width). Total Cost = Area × Price per Square Foot.Square footage is simply length multiplied by width when both are in feet. If measurements are in metres, the result is first converted to square feet. Perimeter adds all four sides (which is twice the sum of length and width). Total cost multiplies the area by the unit price.
| Input | Result | Notes |
|---|---|---|
| Length 12 ft, width 10 ft | 120 sq ft (11.15 sq m, 13.33 sq yd) | A = 12 × 10 = 120 sq ft; perimeter = 2(12 + 10) = 44 ft |
| Length 5 m, width 4 m at $50/sq ft | 2,152.78 sq ft, cost $107,639 | 5 m × 4 m = 20 sq m = 215.28 sq ft; $50 × 215.28 = $10,764 |
| Length 20 ft, width 15 ft | 300 sq ft (27.87 sq m, 33.33 sq yd) | A = 20 × 15 = 300 sq ft; perimeter = 2(20 + 15) = 70 ft |
1 square metre = 10.764 square feet. A square metre is larger. Use square metres for metric countries; use square feet in the US and UK.
Yes. Enter 12.5 ft or 3.75 m for precise measurements. The calculator handles decimals and fractions.
Divide the L-shaped room into two rectangles. Calculate the area of each rectangle separately, then add them together.
For circular spaces, use the circle calculator (area = π × radius²). For triangular spaces, divide by 2 (area = base × height ÷ 2). For irregular shapes, break them into rectangles and triangles.
Enter your price per square foot (e.g. $5 per sq ft for flooring). Multiply square footage × price = total cost.
No. Square footage measures area (inside space). Perimeter measures distance around the edge. A 10×10 room has 100 sq ft area but 40 ft perimeter.