Square Feet of a Rectangle Calculator
Calculate the area of a rectangle in square feet with unit conversions and practical applications
Calculate Rectangle Area
Typically the longest side of the rectangle
Typically the shortest side of the rectangle
Rectangle Properties
Common Rectangle Examples
American Football Field (without end zones)
American Football Field (with end zones)
Basketball Court (NBA)
Tennis Court
Average Parking Space
Average Bedroom
Rectangle Area Formula
Unit Conversions
Practical Tips
Measuring Rooms
Measure at the longest and widest points
Carpet/Flooring
Add 5-10% extra for waste and cuts
Paint Coverage
1 gallon typically covers 400 sq ft
Irregular Shapes
Break into multiple rectangles
Understanding Square Feet of a Rectangle
What is Square Footage?
Square footage is a measurement of area expressed in square feet (sq ft or ft²). For a rectangle, it represents the total amount of space enclosed within the four sides. This measurement is crucial for real estate, construction, interior design, and many practical applications.
Formula Breakdown
The rectangle area formula Area = Length × Width is one of the most fundamental geometric calculations. Both dimensions must be in the same unit (preferably feet) to get accurate square footage results.
Practical Applications
- •Real estate property measurements
- •Carpet and flooring material calculations
- •Paint coverage and wall area estimation
- •Garden and landscaping project planning
- •Construction and building permits
Step-by-Step Calculation:
- 1. Measure length and width in feet
- 2. Multiply length × width
- 3. Result is area in square feet
- 4. Double-check with our calculator
Common Use Cases
Home Projects
Calculating square footage for flooring, carpeting, tile, and paint coverage in rooms and houses.
Real Estate
Property listings, price per square foot calculations, and space planning for buyers and sellers.
Construction
Building permits, material estimation, foundation planning, and architectural design specifications.
Frequently Asked Questions
How do I calculate carpet needed for a room?
Measure the length and width of your room in feet, multiply them together to get square footage, then add 5-10% extra for waste and cuts. Our calculator shows both the exact area and estimated carpet costs for different quality levels.
What is the area of an American football field?
An American football field is 300 feet long and 160 feet wide for the playing area (48,000 sq ft). Including the end zones, it's 360 feet long, making the total area 57,600 square feet.
Can I use different units for length and width?
Our calculator automatically converts different units to feet before calculating square footage. You can enter length in meters and width in inches, and it will give you the correct result in square feet.
How much paint do I need for a room?
Generally, one gallon of paint covers about 400 square feet. Our calculator estimates paint needed based on your floor area, though you should also consider wall height and subtract windows and doors for more accuracy.