Quickly calculate square footage for any room or surface. Whether you’re estimating flooring, paint, or property size, this sq ft calculator gives accurate results in feet, meters, and inches.
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 triangles, calculate each section, then add totals.
Round measurements to the nearest inch or centimeter for practical applications.
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Everything you need to know about area calculations
Square footage measures the total area of a flat surface in square feet. It’s calculated by multiplying the length by the width of a rectangular space. One square foot equals a square that’s 12 inches on each side or 144 square inches total.
Square footage is one of the most important metrics in the U.S. for describing space. It determines how much flooring you’ll need, how much paint to buy, and how property values are compared in real estate listings. For instance, knowing that a home measures 2,000 square feet provides a consistent way to evaluate price per square foot across different properties.
In addition to real estate, square footage plays a vital role in construction, renovation, and interior design. Contractors use it to estimate material costs, while designers use it to plan layouts efficiently. Even homeowners and renters benefit by understanding their square footage to organize furniture, create floor plans, or budget for home improvement projects.
LiteCalc’s Square Footage Calculator makes these tasks faster and more reliable. It provides instant conversions between feet, inches, and meters, giving users flexible, accurate results that simplify every project from small DIY jobs to large commercial builds.
Calculate how much tile, carpet, or hardwood you need for rooms and hallways.
Estimate wall or ceiling area to plan gallons and coats accurately.
Compare property size, price per square foot, and space utilization.
Plan garden beds, sod, mulch, and patio layouts with confidence.
Always add 5–10% extra material to account for waste, cuts, and future repairs. For irregular shapes, split the area into rectangles/triangles and sum the results. Exclude doorways, openings, and built-ins when you only need usable floor space.
Common questions about square footage calculations
To calculate square footage, multiply the length by the width of your space in feet. For example, a 10 ft × 12 ft room equals 120 square feet. The LiteCalc Square Footage Calculator does this instantly for any shape.
A square foot (sq ft) is a U.S. unit of area equal to a square that’s 12 inches on each side, or 144 square inches total. It’s the most common way to measure space for real estate, flooring, and construction.
Measure the room’s length and width in feet, then multiply them. For irregular rooms, divide the space into smaller rectangles or triangles, calculate each area separately, and add them together.
Yes. The LiteCalc calculator supports multiple units, including feet, inches, and meters. Simply choose your preferred unit, enter your dimensions, and the results will be automatically converted to square feet.
For a circle, use the formula π × radius². For a triangle, use (base × height) ÷ 2. LiteCalc’s Area Calculator can handle these shapes easily, giving you square footage in seconds.
You can use the calculator to plan flooring, estimate paint coverage, compare real estate prices, design landscaping, or calculate materials for renovation projects.
To convert square inches to square feet, divide the number of square inches by 144. Example: 288 sq in ÷ 144 = 2 sq ft. The calculator does this conversion automatically.
Break the space into smaller, regular shapes such as rectangles or triangles. Measure each part, calculate the area separately, then total them to get the full square footage.
It’s precise for any entered values and accounts for rounding and unit conversion automatically. Always double-check physical measurements for best real-world accuracy.
Square footage determines material needs, cost estimates, and property value. It’s essential for construction planning, home improvement projects, and real estate comparisons.