Área Losango

A = D·d/2.
Created by
Renato Passos, Eng. de Software
Reviewed by
Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

A
30,00 m²

Formula

A = D·d/2

About this calculator

The rhombus area calculator allows you to quickly calculate the area of a rhombus from the lengths of its diagonals. A rhombus is a quadrilateral with all sides equal, and its area can be obtained by the product of the diagonals divided by two. This tool is useful for students, teachers, and professionals needing precise geometric calculations.

The operation is simple: enter the values of the longer diagonal (D) and the shorter diagonal (d) in the provided fields. The calculator applies the formula A = (D * d) / 2, where A is the area. The result is displayed instantly, facilitating checks and problem-solving. The tool accepts decimal and integer numbers.

Use this calculator in situations such as craft projects with rhombus shapes, area calculations in plane geometry, or to check school exercises. It is also useful in technical fields like engineering and architecture when working with pavements or structures involving rhombuses.

Cautions: ensure the diagonals entered are perpendicular and bisect each other, a fundamental property of a rhombus. The formula is only valid for rhombuses, not other quadrilaterals. Verify that the units of measurement are consistent (e.g., both in cm) to obtain the area in the corresponding square unit.

Frequently asked questions

Can I use this calculator for any rhombus?

Yes, as long as you have the measurements of both diagonals. The formula is universal for rhombuses.

What if I only have the side length and an angle?

This calculator uses only diagonals. For side and angle, you would need another formula or tool.

Does the calculator work with inches?

Yes, as long as both diagonals are in the same unit. The result will be in square inches.

What is the difference between a rhombus and a square?

A square is a rhombus with 90-degree angles. The diagonal area formula also works for squares.

Is the result always exact?

Yes, the calculation is mathematical. Rounding may occur if you use decimals, but precision is high.

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