Free Rectangles and Parallelograms Calculator - Solve for Area, Perimeter, length, and width of a rectangle or parallelogram and also calculates the diagonal length as well as the circumradius and inradius.

This calculator has 4 inputs.

This calculator has 4 inputs.

- area
- Number of square units covering the shape
- circumradius
- a radius of the circle inside which the polygon can be inscribed
- inradius
- a radius of an inscribed circle or sphere
- length
- the measurement or extent of something from end to end
- parallelogram
- simple quadrilateral with two pairs of parallel sides.
- perimeter
- The distance around a shape or object
- rectangle
- a quadrilateral with four right angles
- rectangles and parallelograms
- width
- the measurement or extent of something from side to side.