OhMyCalc

Rectangle Area Calculator

Calculate the area, perimeter, and diagonal of a rectangle by entering length and width. Instant results with step-by-step formulas.

How to Use the Rectangle Area Calculator

  1. Enter the required dimensions (length, width, radius, height, etc.).
  2. The area, volume, or other geometric value is computed instantly.
  3. Review the result along with the formula used.
  4. Adjust dimensions to compare different scenarios.

Referência Rápida

DePara
2 × 36
4 × 520
5 × 840
10 × 10100
12 × 15180
20 × 30600

Casos de Uso

Fórmula

Formulas: Area S = a × b, Perimeter P = 2(a + b), Diagonal d = √(a² + b²). Where a is the length and b is the width.

Perguntas Frequentes

How do you calculate the area of a rectangle?
Multiply the length by the width: S = a × b.
How do you find the diagonal of a rectangle?
Use the Pythagorean theorem: d = √(a² + b²).
What is the perimeter of a rectangle?
The perimeter is the sum of all sides: P = 2(a + b), or P = 2a + 2b.