Square Footage Calculator
Square Footage Calculator – Easily Calculate Sq Ft Online
Looking for a quick way to calculate square feet for your home, office, or construction project? Our free Square Footage Calculator (also known as an sq ft calculator, sqft calculator, or square foot calculator) makes it simple to measure and convert areas with just a few clicks. Whether you’re planning flooring, painting, landscaping, or real estate, knowing how to calculate sq ft accurately saves time and money.
What is Square Footage?
Square footage (sq ft or sqft) is the measurement of area expressed in square feet. It’s the most common way to describe the size of rooms, houses, apartments, and land in the United States. For example, a room that is 12 feet long and 10 feet wide has an area of:
[ 12 \times 10 = 120 \text{ sq ft} ]
Read: Percentage Calculator
How to Calculate Square Feet
There are several ways to calculate square footage depending on the shape:
- Rectangle / Square: Length × Width
- Circle: π × radius²
- Triangle: ½ × base × height
- Trapezoid: ½ × (base1 + base2) × height
- Parallelogram: base × height
- Ellipse / Oval: π × semi‑major axis × semi‑minor axis
- Polygon: (perimeter × apothem) ÷ 2
Our sq ft calculator handles all these shapes automatically, so you don’t need to memorize formulas.
Why Use Our Square Footage Calculator?
- ✅ User‑friendly: Enter dimensions in feet, meters, inches, or yards.
- ✅ Multiple rooms: Add as many rooms as you need and get the total area.
- ✅ Conversions included: Instantly convert between square inches to square feet, square feet to square meters, square feet to square yards, square feet to acres, and square meters to hectares.
- ✅ Accurate results: Perfect for homeowners, contractors, real estate agents, and DIY projects.
Common Questions
How to figure out square footage?
Measure the length and width of the space, then multiply them. For irregular shapes, break them into smaller rectangles or use our square footage calculator.
How to measure square feet?
Use a tape measure to get dimensions in feet. If you measure in inches, divide by 12 to convert to feet, then calculate the square feet.
How to find square feet of a house?
Add the square footage of each room using our sq foot calculator. The tool lets you input multiple rooms and automatically sums the total.
How to calculate the square feet of land?
Measure the boundaries in feet or yards, then use the appropriate shape formula. Our sf calculator includes trapezoid and polygon options for irregular plots
Try It Now
Stop guessing and start calculating! Use our free square footage calculator today to quickly calculate square feet, convert units, and figure out the exact area of any space. Whether you call it an sq ft calculator, sqft calculator, or square foot calculator, this tool is designed to make your life easier.