Perimeter of a 20 × 15 Rectangle
A rectangle with width 20 and height 15 has a perimeter of 70 units.
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.
Perimeter = 2 × (20 + 15) = 70 units.
Frequently asked questions
- How do you find the perimeter of a rectangle?
- Perimeter = 2 × (width + height). Area = width × height.