Rhombus Calculator
Calculate area from diagonals and perimeter from side length.
Formula
A = (d1×d2)/2, s = √((d1/2)²+(d2/2)²), P = 4s
Area equals half the product of the diagonals. The side length is found using the Pythagorean theorem on the half-diagonals.
Examples
d1=8, d2=6
d1=10, d2=10
d1=12, d2=5
Frequently Asked Questions
How do I find the area of a rhombus from its diagonals?
A = (d1 × d2) / 2, half the product of the two diagonals.
How is the side of a rhombus calculated?
s = √((d1/2)² + (d2/2)²) using the Pythagorean theorem.
About this Calculator
Calculate area from diagonals and perimeter from side length. All calculations are performed in your browser for instant results. Formulas are mathematically exact using JavaScript's built-in Math functions.