How to use this calculator

For a rhombus, perpendicular diagonals split the shape into four right triangles.

The method

Area = d₁d₂/2

Enter your values in the labeled fields and choose Calculate. The result panel shows the answer and supporting values when useful.

WORKED EXAMPLE INPUT

Diagonal 1: 10, Diagonal 2: 8

Select Calculate to evaluate these example values.

Scope and limitations

This formula assumes the entered values are the two full diagonals.

Common questions

Can I use different units?

Use consistent units unless this page is a unit converter. The result follows the units implied by the inputs.

Are results exact?

Displayed values may be rounded. Keep extra precision for important follow-up calculations.

Methods & verification

Formulas use standard mathematical definitions and fixed unit factors where applicable. See our methodology for numerical conventions, rounding, privacy, and limitations.