📐 Square feet of a Rectangle Calculator
Most rooms, yards and plots are rectangles, and their area is simply length times width. Enter both sides in feet and the calculator gives you the square footage immediately.
It also converts the result into square meters and square yards, so the number works whether you are buying paint, flooring or fence materials.
How to use this calculator
Enter the length and width in feet. The calculator returns the area in square feet, square meters and square yards.
- Type the Length in feet.
- Type the Width in feet.
- Read the square-foot area result instantly.
- Check the metric and square-yard conversions.
Frequently asked questions
What does the Square feet of a Rectangle Calculator compute?
It finds the area of any rectangle from its length and width. You enter both in feet, and it returns square feet plus square meters and square yards.
What is the formula behind it?
Area equals length times width. Rectangles tile perfectly with no gaps, so the count of unit squares is just the product of the sides.
Can you give a worked example?
A 20 by 15 foot room has an area of 300 square feet, which is 27.87 square meters or 33.33 square yards.
What if my room is L-shaped?
Split it into two rectangles, calculate each area, and add them together. The calculator handles each rectangle separately.