For a rhomb with side length a and diagonals e and f, these formulas hold:
area = (e*f)/2
perimeter = a*4
a = square root of (e/2)^2+(f/2)^2
Arcs are simply calculated by decomposing the rhomb into for rect-angled triangles.

Rhombs

What is a rhomb?

A rhomb is a quadrangle having four sides of the same length. Therefore, opposing sides have to be parallel and opposing angles have to be equal. A rhomb is at the same time a rhomboid and a kite.

How to do rhomb calculations?

The simplest calculations can be done if you know the lengths of the diagonals. The rhomb is uniquely determined by them.
The side length of a rhomb equals square root of ((e/2)²+(f/2)²), als can be seen by Pythagoras.
The area equals e*f/2.
If you want to solve some examples, just enter them above.

For further information just move the mouse over one of the words below. The corresponding part of the rhomb will be marked.

Side a
Angle alpha Angle beta
Diagonal e Diagonal f
Area
Perimeter

Rhomb calculation

Here you got a free rhomb calculator. Just enter some values. Other values will be calculated.