Rhombus formulas
A rhombus has four equal sides. From side and angle: area = s^2 * sin(angle), diagonals via the law of cosines. From diagonals: area = d1*d2/2, side = sqrt((d1/2)^2 + (d2/2)^2).
Rhombus Calculator
Calculate area, perimeter, diagonals, and angles of a rhombus from side and angle or diagonal inputs.
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Geometry
Rhombus area, perimeter, diagonals, and angles
The rhombus calculator finds area, perimeter, diagonal lengths, and angles from side and angle or from two diagonals.
Limitations
Angles must be between 0 and 180 degrees exclusive. Diagonals must be positive.
Frequently asked questions
Yes. A square is a rhombus where all angles are 90 degrees.
They bisect each other at right angles. Each diagonal splits the rhombus into two congruent triangles.
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