Square Area Calculator
Calculate the area and perimeter of a square from its side length. Also finds the diagonal.
Enter the side length to calculate.
Square Area Formula
Area = s²
Perimeter = 4s
Diagonal = s√2
Perimeter = 4s
Diagonal = s√2
Example: A square with side = 6 units.
Area = 6² = 36 square units
Perimeter = 4 × 6 = 24 units
Diagonal = 6√2 ≈ 8.485 units
Area = 6² = 36 square units
Perimeter = 4 × 6 = 24 units
Diagonal = 6√2 ≈ 8.485 units
Properties of a Square
- All four sides are equal in length.
- All four angles are 90°.
- Diagonals are equal, bisect each other at 90°.
- A square is both a rectangle and a rhombus.
FAQ
How is a square different from a rectangle?
A square is a special rectangle where all sides are equal. A rectangle only requires opposite sides to be equal.
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Last updated: 2026-08-08