Area of a Rhombus

Area of a Rhombus

Formulas are given below. Note that the diagonals of a rhombus are perpendicular (as is the case with all kites).

Rhombus

s = side length of rhombus
h = height of rhombus
d₁ = long diagonal of rhombus
d₂ = short diagonal of rhombus

Area = hs
         = s² sin A
         = s² sin B
         = (½) d₁d₂

Rhombus with vertices A, B, C, D; side length s labeled on all sides; height h shown as dotted vertical line with right angle...

Rhombus with vertices A, B, C, D and perpendicular diagonals labeled d1 (long) and d2 (short) intersecting at center point O.

See also

Area of a kite, parallelogram, area of a parallelogram, sine