Square
Perimeter, Area, Diagonal of square
The best calculator for the square you’ve ever seen :-)
Calculation
Enter a value to any field - the others are calculated themselves. If you change a value in any field, the others are automatically recalculated.
For decimals you can enter either points or commas
as decimal marks (but only one decimal point in a value).
The result will be in the units that you enter into the fields.
For example: if you enter decimeters, calculation will be also in decimeters.
If appears an error NaN, check whether you enter to the field
a correct value, ie. without any letters and other characters.
Formula
O = | 4 × a | [m] | |
P = | a × a = a² | [m²] | |
u = | a √2 ≈ a × 1,41 | [m] |

a … length of one side
u … diagonal
The square and the circle (disc)
Diagonal (u) = Excircle diameter
Side of square (a) = Incircle diameter
Calculation of square online
Links
- Wikipedia - Square
- Wikipedia - what can be a square
- Decimal mark
How to calculate ...
Bold shapes and objects are already in operation. The others contain only a formula.
- Circle - online calculator
- Cube - online calculator
- Sphere - online calculator
- Cylinder - online calculator
- Triangle
- Rectangle - online calculator
- Cuboid
- Ellipse
- Cone
- Pyramid
- GEOMETRY - disambiguation
You might be interested
- Mathematics:
Angle - Physics:
Length
Wavelength
Mass - Financement:
VAT Calculator