About Rectangle Calculator
Calculate various properties of a rectangle using its length and width. This calculator provides the area, perimeter, and diagonal of a rectangle instantly with a visual representation.
Formulas
- Area: A = length × width
- Perimeter: P = 2 × length + 2 × width
- Diagonal: d = √(length² + width²)
How to Use
- Enter the length of the rectangle
- Enter the width of the rectangle
- Click Calculate to see the results
- View the visual representation with labeled dimensions
Example
For a rectangle with length = 10 and width = 5:
- Area = 10 × 5 = 50 square units
- Perimeter = 2 × 10 + 2 × 5 = 30 units
- Diagonal = √(10² + 5²) = √125 = 11.18 units