Rectangle Perimeter Calculator
Calculate the perimeter and area of a rectangle from width and height.
How to use this tool
- Enter width and height in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your perimeter and the full breakdown beneath it.
Calculate the perimeter (2×(w+h)) and area (w×h) of a rectangle.
Frequently asked questions
- How do you find the perimeter of a rectangle?
- Perimeter = 2 × (width + height). Area = width × height.