Rectangle
Perimeter, Area, Diagonal of rectangle
The best calculator for the rectangle you’ve ever seen :-)
Calculation
Enter values into the two yellow fields - the rest will be calculated automatically.
If you change a value in the field, all the marked ones recalculate accordingly.
Using the checkbox you can choose any three fields,
that you want to calculate.
For decimals you can enter either points or commas.
The result will be in the units that you enter into the fields.
For example, if you enter decimeters, the result will also be in decimeters.
If a NaN error occurs,
you have probably entered invalid values.
Formula
| O = | 2 × (a + b) | [m] | |
| P = | a × b | [m²] | |
| u = | √a² + b² | [m] | |
| tg α = | b / a | [º] | |
| + reverse formulas www.wikina.org/a/Rectangle | |||
a … side a length
b … side b length
u … diagonal
α … angle
Rectangle and circle
Diagonal (u) = diameter of a circle circumscribing a rectangle
shorter side of the rectangle (a) = diameter of a circle inscribing a rectangle
Other formulas are also avaiable on Wikina under the Rectangle keyword.
Online rectangle calculation
Calculator for calculating rectangle's surface, converting the perimeter of a rectangle, rectangle formulas. Calculation of a diameter of a circle circumscribing or inscribing a rectangle, calculation of surface from perimeter. Calculation of rectangle's perimeter online. Rectangle formulas.
Links
How to calculate ...
Bold shapes and objects are already in operation. The others contain only a formula.
- Circle - online calculator
- Square - online calculator
- Cube - online calculator
- Sphere - online calculator
- Cylinder - online calculator
- Triangle
- Cuboid
- Ellipse
- Cone
- Pyramid
- GEOMETRY - disambiguation
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