Rhombus Area Calculator
Area from diagonals, side and angle, or base and height.
Enter your values
ⓘ Live results
Results
- Area
- 120 sq units
- Side length
- 13
- Perimeter
- 52
- Height
- 9.2308
- Acute angle
- 45.24°
- Obtuse angle
- 134.76°
Quick answer
A rhombus's area is half the product of its diagonals: A = (d₁ × d₂) ÷ 2, because the diagonals cut it into four right triangles.
A = (d₁ · d₂) ÷ 2
How to use the Rhombus Area Calculator
- 1Measure both diagonals corner to corner.
- 2Enter them in any order.
- 3Read the area plus the side length you will need for ordering trim or edging.
Worked example
Using the values the calculator loads with:
Inputs
- Diagonal 110 units
- Diagonal 224 units
Results
- Area120 sq units
- Side length13
- Perimeter52
- Height9.2308
- Acute angle45.24°
- Obtuse angle134.76°
Frequently asked questions
Is a square a rhombus?
Yes — a square is a rhombus whose angles all happen to be 90°, so its diagonals are equal.
Do the diagonals always cross at right angles?
In a rhombus, yes, and they bisect each other, which is exactly why the area formula works.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.