Calculators
Rhombus Calculator
Calculate rhombus area, side, perimeter, and shape from the two diagonals locally in your browser.
Enter the two diagonals from 0 (exclusive) to 1000000000 to see the area ((diagonal 1 x diagonal 2) / 2), the side, the perimeter (4 x side), and shape. The calculation runs locally in your browser; your values are not uploaded or stored.
Find rhombus measurements without uploading anything.
Enter the two diagonals from 0 (exclusive) to 1000000000 to see the area, side, perimeter, and shape. Everything runs locally in your browser, so your values are not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
What does the rhombus calculator show?
Enter the two diagonals from 0 (exclusive) to 1000000000. The calculator returns the area ((diagonal 1 times diagonal 2) / 2), the side (square root of half-diagonal 1 squared plus half-diagonal 2 squared), the perimeter (4 times the side), and the shape (square when both diagonals are equal, otherwise rhombus). For example, diagonals 10 and 6 give area 30, side about 5.83095189485, perimeter about 23.3238075794, and rhombus shape.
Which formulas does the rhombus calculator use?
It uses area = (d1 x d2) / 2, side = square root of ((d1 / 2) squared + (d2 / 2) squared) from the Pythagorean theorem applied to the four right triangles formed by the diagonals, and perimeter = 4 x side. The shape is square when both diagonals are equal and rhombus otherwise.
Which inputs are accepted?
Enter diagonal 1 and diagonal 2 greater than zero through 1000000000. Decimal values are accepted. Zero, negative numbers, non-numeric text, and values above the limit show a clear error instead of a result.
Do my numbers stay private?
Yes. The calculation and copy action run locally in your browser. CodeASystem does not upload or store the values you enter.