Area and perimeter calculator
MathCalculate the area and perimeter of a rectangle from width and height.
Your results
Calculate the area and perimeter of a rectangle instantly.
Formulas used
For a rectangle, area is width times height and perimeter is twice the sum of both sides. Enter the measurements in meters.
Units and conversions
Results are shown in m² and meters. If you need other units, convert the inputs or pair this with our length converter.
Frequently asked questions
Answers to the most common questions about this tool.
How is this result calculated?
It applies the mathematical rule shown by this calculator to your inputs.
Can the result be greater than 100%?
Yes, when the relationship between the entered values is larger than the reference value.
What is this calculation useful for?
Use it for quick checks, study, and everyday calculations.
Which values can I enter?
Enter valid numbers in the fields and check any required format.
What happens with zero or invalid values?
The tool prevents or flags operations that are not mathematically defined.
Sources and methodology
Methodology: Rectangle area and perimeter
Calculates area as width × height and perimeter as 2 × (width + height), with meters as input units.
It represents only a rectangle and does not automatically convert units.
References
No external reference is required: the mathematical calculation is described above.
Last reviewed
July 15, 2026