Trapezoid perimeter calculator
Calculate trapezoid perimeter from four sides, isosceles mode or right trapezoid mode, with conversions and geometric visualization.
Areas & perimeters
Area and perimeter calculators for plane shapes: rectangle, circle, triangle, ellipse, and polygons. Results with units and formulas.
Rhombus perimeter calculator
Calculate rhombus perimeter from side, diagonals or side and angle, with conversions and geometric visualization.
Triangle perimeter calculator
Calculate triangle perimeter from three sides, two sides plus included angle or equilateral mode, with conversions and geometric visualization.
Parallelogram perimeter calculator
Parallelogram perimeter with summary table, conversions, copy and CSV.
Rectangle perimeter calculator
Rectangle perimeter with summary table, conversions, copy and CSV.
Square perimeter calculator
Square perimeter with summary table, conversions and copy.
Circle circumference calculator
Circle perimeter with configurable π, summary table, conversions and copy.
Triangle area calculator
Calculate area, perimeter, height, type, conversions and a geometric visualization of the triangle.
Trapezoid area calculator
Area, height, conversions and perimeter when it can be derived from the provided data.
Rhombus area calculator
Calculate area, perimeter, height, angle, diagonals, conversions and a geometric visualization of the rhombus.
Rectangle area calculator
Calculate area, perimeter, diagonal, aspect ratio, conversions and a geometric visualization of the rectangle.
Parallelogram area calculator
Calculate area, perimeter, conversions and a geometric visualization of the parallelogram.
Square area calculator
Square area with side, diagonal, perimeter, conversions, summary table and copy.
Circle area calculator
Circle area with radius, diameter, circumference, conversions, summary table and copy.