Square Area Calculator

Where a is the length of one side.

Calculate the area of a square with side length 7 cm:

Result: 49 cm²

1. Enter the side length
2. Click "Calculate" to see the area

• Perimeter: $4a$
• Diagonal: $a\\sqrt{2}$
• Area from diagonal: $\\frac{d^2}{2}$

• All four sides are equal
• All four angles are 90°
• Diagonals are equal and bisect each other at 90°
• A square is both a rectangle and a rhombus

• Land measurement
• Tiling and flooring
• Graphics and design
• Construction
• Mathematics education

Is a square a rectangle? Yes, a square is a special type of rectangle where all sides are equal.

Is a square a rhombus? Yes, a square is a special type of rhombus where all angles are 90°.

How do I find the side from the area? $a = \\sqrt{\\text{area}}$

What is the perimeter of a 10 cm square? 4 × 10 = 40 cm.

Can I inscribe a circle in a square? Yes, the circle touches all four sides. Diameter = side length.