Square Area and Perimeter Calculator
Enter one side of your square — get area, perimeter and diagonal. All sides are equal, so one side is enough.
Enter values — the result will show here live.
How to use
- Enter the length of the square's side.
- Area, perimeter and diagonal will appear. For marla/land math: if the side is in feet, the area will be in square feet.
Note: Formulas: Area = side², Perimeter = 4 x side, Diagonal = side x √2.
Frequently Asked Questions (FAQ)
What inputs does the square calculator need?
Just the length of one side. All four sides of a square are equal, so one measurement is enough.
What results does it show?
Area, perimeter and diagonal of the square, updated live as you type.
Which formulas are used?
Area = side squared, Perimeter = 4 times side, Diagonal = side times the square root of 2.
Do the results update as I type?
Yes. The area, perimeter and diagonal update live as you type the side length.