Square Calculator

Use our free square calculator to compute the area, perimeter, and diagonal of a square. Enter the side length and get all measurements instantly.

Math

Side Length (s)

Formula

A square is a quadrilateral with four equal sides and four right angles. This calculator computes the area (A = s²), perimeter (P = 4s), and diagonal (d = sv2).

A = s², P = 4s

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter the side length of the square.
2Click Calculate to compute the area and perimeter.
3Area = side × side.
4Perimeter = 4 × side.

Examples

Square with side length 6

1.Enter side = 6.
2.Area = 6 × 6 = 36 units².
3.Perimeter = 4 × 6 = 24 units.

Result: Area: 36.0000, Perimeter: 24.0000

Square with side length 10

1.Enter side = 10.
2.Area = 10 × 10 = 100 units².
3.Perimeter = 4 × 10 = 40 units.

Result: Area: 100.0000, Perimeter: 40.0000

Frequently Asked Questions

Area = s², where s is the length of one side.

The diagonal d = sv2. For a square of side 6, d = 6 × 1.4142 = 8.485 units.

Any consistent unit works. If side is in cm, area is in cm².

Yes, a square is a special rectangle where all sides are equal.

Yes. Side length can be any positive number, including decimals.

Related Calculators

Rectangle Calculator Circle Calculator Triangle Calculator Right Triangle Calculator Percentage Calculator Basic Calculator

CalculateMe Team

Last updated: 2026-07-13

Square Calculator

Formula

How It Works

Examples

Square with side length 6

Square with side length 10

Frequently Asked Questions

What is the formula for the area of a square?

How do I find the diagonal of a square?

What units should I use?

Is a square a rectangle?

Can side length be a decimal?

Related Calculators

Square Calculator

Formula

How It Works

Examples

Square with side length 6

Square with side length 10

Frequently Asked Questions

What is the formula for the area of a square?

How do I find the diagonal of a square?

What units should I use?

Is a square a rectangle?

Can side length be a decimal?

Related Calculators