Square Calculator
Calculate square area, perimeter, and diagonal from one side.
Area
100
Perimeter
40
Diagonal
14.1421
Formula
Area = side². Perimeter = 4 × side. Diagonal = side × √2.
Use the square calculator to find the main measurements of a square from a single side length.
How to Use
Use the square calculator to find the main measurements of a square from a single side length. Enter the Side length values and review the Area, Perimeter, and Diagonal outputs after you calculate.
- Open the calculator : Start with Square Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What formula does the Square Calculator use?
Area = side². Perimeter = 4 × side. Diagonal = side × √2.