Rhombus Area Calculator

Using diagonals:

Using base and height:

Where d₁ and d₂ are the diagonals, b is the base length, and h is the height.

Calculate the area of a rhombus with diagonals 12 cm and 8 cm:

Result: 48 cm²

1. Enter one diagonal length
2. Enter the other diagonal length
3. Click "Calculate" to see the area

• Side from diagonals: $s = \\\\frac{1}{2} \\\\sqrt{d_1^2 + d_2^2}$
• Perimeter: $4 \\\\times \\\\text{side}$
• Area with angle: $s^2 \\\\times \\\\sin(\\\\theta)$

• Diamond-shaped land parcels
• Jewelry design
• Architecture and tiling patterns
• Engineering and manufacturing

What if I only know one diagonal? You need both diagonals or additional information like an angle or side length.

Is a square a rhombus? Yes, a square is a special rhombus with all angles equal to 90°.

How is this different from a kite? A rhombus has all sides equal; a kite has two pairs of adjacent equal sides.

Can diagonals be equal? Yes, when they're equal the rhombus is a square.