What formulas does this calculator use?

Area = (diagonal1 × diagonal2) ÷ 2; Perimeter = 4 × side.

What makes a quadrilateral a rhombus?

All four sides are equal, with diagonals bisecting each other at right angles.

How is a rhombus different from a square?

A square is a special rhombus where all angles are also 90°.

Rhombus Calculator - CalculatorLabs.net

Rhombus Calculator

A rhombus is a four-sided shape (quadrilateral) where all four sides are the same length, but the angles aren't necessarily 90° — like a squashed square or a classic diamond shape.

Diagonal 1 (d1)

Diagonal 2 (d2)

Instant Result

Area -

Side Length -

Perimeter -

What Is a Rhombus Calculator?

A rhombus is a four-sided shape (quadrilateral) where all four sides are the same length, but the angles aren't necessarily 90° — like a squashed square or a classic diamond shape. Its two diagonals cross each other at right angles, which is the key to calculating its area and side length.

How to Use This Rhombus Calculator

Measure the two diagonals of the rhombus (the lines connecting opposite corners).
Enter both diagonal lengths into the fields above.
Click Calculate to get the area, side length, and perimeter.

Formula

Area = (d1 × d2) / 2
Side = √((d1/2)² + (d2/2)²)
Perimeter = 4 × Side

Worked Example

A rhombus-shaped tile has diagonals of 12 cm and 16 cm. Area = (12 × 16)/2 = 96 cm². Side = √(6² + 8²) = √100 = 10 cm. Perimeter = 4 × 10 = 40 cm.