Geometry Calculators
47 free geometry calculators in Math.
- Angle Between Lines CalculatorCalculate the acute angle between two lines given their slopes.
- Annulus Area CalculatorCompute the area of an annulus (ring) from the outer and inner radii.
- Arc Length CalculatorCompute the arc length of a circle given its radius and central angle in degrees.
- Area CalculatorCalculate the area of rectangles, triangles, circles, trapezoids, ellipses and sectors.
- Chord Length CalculatorCalculate the length of a chord from the circle radius and central angle.
- Circle CalculatorSolve a circle from radius, diameter, circumference or area — any one gives the rest.
- Circle Equation CalculatorDerive the standard and general equations of a circle from its center and radius.
- Cone CalculatorCalculate volume, total surface area, lateral area and slant height of a right cone.
- Cube (Solid) CalculatorCompute volume, surface area, face diagonal and space diagonal of a cube.
- Cuboid CalculatorCalculate volume, surface area and space diagonal of a rectangular cuboid.
- Cylinder CalculatorCompute volume, total surface area and lateral area of a right circular cylinder.
- Distance CalculatorMeasure distance between 2D or 3D points, and great-circle distance between coordinates.
- Ellipse CalculatorCalculate area, circumference, eccentricity and foci of an ellipse from its semi-axes.
- Equilateral Triangle CalculatorCompute all properties of an equilateral triangle from one side length.
- Heron's Formula CalculatorCompute triangle area from three sides using Heron's formula with triangle inequality validation.
- Hexagon CalculatorCompute area, perimeter, apothem and interior angle of a regular hexagon.
- Hyperbola CalculatorCompute eccentricity, foci, vertices and asymptotes of a hyperbola from a and b.
- Isosceles Triangle CalculatorCalculate area, perimeter, height and angles of an isosceles triangle from its equal sides and base.
- Kite CalculatorFind the area and perimeter of a kite from its two diagonals and side pairs.
- Line Equation CalculatorDetermine the equation of a line through two points in slope-intercept and standard forms.
- Midpoint CalculatorFind the midpoint between two points in the Cartesian plane.
- Parabola CalculatorFind the vertex, focus, directrix and axis of symmetry of a parabola y=ax²+bx+c.
- Pentagon CalculatorCompute area, perimeter, apothem and interior angle of a regular pentagon.
- Point-Circle Position CalculatorDetermine whether a point lies inside, on, or outside a circle.
- Point-to-Line Distance CalculatorCompute the perpendicular distance from a point to a line Ax+By+C=0.
- Prism CalculatorCalculate volume and surface area of a triangular prism from base dimensions and length.
- Pyramid CalculatorCompute volume and surface area of a regular square pyramid from base side and height.
- Pythagorean Theorem CalculatorFind any missing side of a right triangle using a² + b² = c².
- Rectangle CalculatorCalculate area, perimeter and diagonal of a rectangle from length and width.
- Reflection CalculatorReflect a point across the x-axis, y-axis, origin, or the line y=x.
- Regular Polygon CalculatorCalculate area, perimeter, apothem and angles of any regular polygon given sides and length.
- Rhombus CalculatorCalculate area, perimeter and angles of a rhombus from its side and diagonals.
- Right Triangle CalculatorSolve a right triangle from any two values, with angles, area and perimeter.
- Rotation CalculatorRotate a point by a given angle in degrees about an arbitrary centre of rotation.
- Scalene Triangle CalculatorCalculate area, perimeter and angles of a scalene triangle from three unequal sides.
- Sector Area CalculatorFind the area of a circular sector from its radius and central angle.
- Segment Area CalculatorCalculate the area of a circular segment (sector minus triangle) from radius and angle.
- Sphere CalculatorCalculate volume, surface area, diameter and circumference of a sphere from its radius.
- Square CalculatorCompute area, perimeter, diagonal and inradius of a square from its side length.
- Surface Area CalculatorCompute the surface area of common three-dimensional solids.
- Torus CalculatorCompute volume and surface area of a torus from its major and minor radii.
- Translation CalculatorTranslate a point by a displacement vector (dx, dy) and return the image coordinates.
- Trapezoid CalculatorCalculate area, perimeter and median of a trapezoid from its parallel sides and height.
- Triangle Area CalculatorCalculate the area of a triangle from its base and height.
- Triangle CalculatorSolve any triangle from three known values using the sine and cosine rules.
- Triangle Perimeter CalculatorFind the perimeter of a triangle by summing all three side lengths.
- Volume CalculatorFind the volume of spheres, cones, cubes, cylinders, pyramids and more.