Select a shape and enter dimensions to calculate area
Simple steps to calculate your square footage accurately
Input the length and width of your space in your preferred unit (feet, meters, or inches).
Choose your measurement unit. The calculator supports feet, meters, and inches for maximum flexibility.
Instantly see your square footage in multiple units, plus perimeter and visual representation.
Always double-check your measurements to ensure accuracy before calculating.
Ensure both length and width are measured in the same unit for accurate results.
For irregular spaces, break them into rectangles and calculate each section separately.
Round measurements to the nearest inch or centimeter for practical applications.
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Try NowEverything you need to know about area calculations
Square footage is a unit of measurement that represents the area of a flat surface. It's calculated by multiplying the length by the width of a rectangular space. One square foot equals a square that measures 12 inches on each side.
This measurement is essential for various applications including real estate, construction, interior design, and landscaping projects.
Calculate how much flooring material you need for rooms, hallways, or entire homes.
Determine how much paint you need based on wall area and coverage specifications.
Calculate property values, rental rates, and space utilization for commercial and residential properties.
Plan garden layouts, calculate sod requirements, and estimate material costs for outdoor projects.
Always add 5-10% extra material to account for waste, cuts, and future repairs.
For irregular shapes, break the area into rectangles and triangles for easier calculation.
Consider doorways, windows, and built-in features when calculating usable floor space.
Common questions about square footage calculations
To calculate square footage, multiply the length by the width of the room. For example, a room that is 12 feet long and 10 feet wide has 120 square feet (12 × 10 = 120). Make sure both measurements are in the same unit.
There's no difference - both terms refer to the same measurement. "Square footage" is simply another way of saying "square feet." Both represent the area of a two-dimensional space measured in square feet.
For irregular shapes, break the room into smaller rectangles and triangles. Calculate the area of each section separately, then add them together. This method ensures accuracy for L-shaped rooms, rooms with alcoves, or other non-rectangular spaces.
Yes, closets are typically included in square footage calculations for real estate purposes. However, for flooring or painting projects, you may want to calculate them separately since they might require different materials or treatments.
Our calculator is highly accurate for rectangular spaces when you input correct measurements. The accuracy depends on the precision of your measurements. For professional applications, we recommend verifying calculations and consulting with professionals.
Yes, our calculator supports feet, meters, and inches. You can input measurements in any of these units, and the calculator will provide results in multiple units including square feet, square meters, square inches, and square yards.
Generally, add 5-10% extra material for waste and cuts. For diagonal installations or complex patterns, consider adding 10-15%. This ensures you have enough material to complete the project and some extra for future repairs.
Gross square footage includes all enclosed space within exterior walls, including walls, columns, and mechanical areas. Net square footage (or usable square footage) excludes these elements and represents only the actual usable floor space.
Absolutely! This calculator works perfectly for outdoor spaces like patios, decks, gardens, driveways, and lawns. Simply measure the length and width of your outdoor area and calculate the square footage for landscaping, paving, or other outdoor projects.
Yes, this square footage calculator is completely free to use. There are no hidden fees, registration requirements, or usage limits. You can use it as many times as needed for all your area calculation needs.