Rectangle Perimeter: 12 × 4
A rectangle with width 12 and height 4 has a perimeter of 32 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.
A 12 by 4 rectangle has a perimeter of 2 × (12+4) = 32 units.
Frequently asked questions
- How do you find the perimeter of a rectangle?
- Perimeter = 2 × (width + height). Area = width × height.