Square Footage Calculator
Calculate room area in square feet using length and width. Free online square footage calculator with perimeter, total cost, breakdowns, and charts for flooring, painting, and real estate.
About This Calculator
Our Square Footage Calculator helps you quickly determine the area, perimeter, and total cost of any rectangular room or space. Whether you are planning to install flooring, paint walls, buy tiles, or evaluate real estate property, knowing the exact square footage is essential for accurate budgeting and material estimates.
Simply enter the length and width of your room in feet, and optionally the number of identical rooms and the price per square foot. The calculator instantly computes the area using the formula A = L x W, the perimeter using P = 2 x (L + W), the total area across multiple rooms, and the estimated total cost. Results are displayed with interactive bar and pie charts that help you visualize dimensions and cost breakdowns.
Regional Notes
India: Square footage is commonly used in Indian real estate, especially for apartments and villas. The calculator defaults to feet and square feet, matching the convention used by Indian builders and property listings. Prices can be entered in INR for cost estimation.
United States: Square footage is the standard unit for residential and commercial property in the US. Our calculator supports US feet measurements and USD pricing, making it ideal for home improvement and real estate analysis.
United Kingdom: While the UK officially uses square metres for property listings, square feet remain common for room measurements and renovations. The calculator can still be used with feet measurements, and prices can be entered in GBP.
Frequently Asked Questions
How do I calculate square footage of a room?
Measure the length and width of the room in feet, then multiply them together. For example, a 12 ft by 10 ft room has an area of 120 square feet. Our calculator handles this automatically and also computes the perimeter.
What is the formula for square footage?
The square footage formula for a rectangular room is Area = Length x Width. For a square room, it is the same formula since all sides are equal. The perimeter is calculated as 2 x (Length + Width).
How many square feet is a 10x10 room?
A 10 ft by 10 ft room has 100 square feet of area. The perimeter of a 10x10 room is 40 feet.
How do I calculate square footage for multiple rooms?
Enter the Length and Width of one room, then set the Quantity to the number of identical rooms. The calculator will multiply the area by the quantity to give you the total square footage across all rooms.
Can I calculate the total cost using square footage?
Yes, enter the Price per sq ft in your local currency. The calculator multiplies the total area by the unit price to show the estimated total cost, useful for flooring, tiling, or painting estimates.
Is the Square Footage Calculator free?
Yes, it is completely free to use with no registration required. You can share your calculations via the permalink URL.
What units does the Square Footage Calculator use?
The calculator uses feet for length and width, and displays area in square feet (sq ft). The perimeter is shown in feet. You can enter decimal values for precise measurements.