Square Calculator

Calculate area, perimeter, and diagonal of a square from any given parameter

Calculate Square Properties

Length of one side of the square

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Square Properties

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Side Length (cm)
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Area (cm²)
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Perimeter (cm)
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Diagonal (cm)

Formulas used:

  • • Area: A = a²
  • • Perimeter: P = 4a
  • • Diagonal: d = a√2 ≈ 0 cm

Example Calculation

Square Table Example

Problem: Find the area, perimeter, and diagonal of a square table with side length 4 ft.

Given: Side length a = 4 ft

Solution

Area: A = a² = 4² = 16 ft²

Perimeter: P = 4a = 4 × 4 = 16 ft

Diagonal: d = a√2 = 4 × 1.414 = 5.657 ft

Square Properties

1

Equal Sides

All four sides are equal in length

2

Right Angles

All four angles are 90°

3

Equal Diagonals

Both diagonals are equal and bisect each other at 90°

Key Formulas

Area

A = a²

where a is side length

Perimeter

P = 4a

sum of all sides

Diagonal

d = a√2

diagonal across the square

Understanding Square Calculations

What is a Square?

A square is a regular quadrilateral with four equal sides and four equal angles (90°). It's a special case of a rectangle, rhombus, parallelogram, and trapezoid, inheriting properties from all these shapes.

Key Characteristics

  • All sides are equal in length
  • All angles are 90° (right angles)
  • Diagonals are equal and bisect each other at 90°
  • Has 4 lines of symmetry

Formula Derivations

Area Formula

Area is the space enclosed within the square's boundaries.

A = side × side = a²

Perimeter Formula

Perimeter is the total distance around the square.

P = a + a + a + a = 4a

Diagonal Formula

Using Pythagorean theorem: d² = a² + a²

d = √(2a²) = a√2 ≈ 1.414a