Geometry Calculators
Right Triangle Calculator Online
The right triangle calculator allows you to calculate the basic parameters of a triangle, such as side lengths, area and perimeter, knowing some of them.
Triangle Area Calculator: 6 Methods
Find the area of a triangle from the base and height, three sides (Heron's formula), two sides and the included angle, a side and two angles, for equilateral and right triangles.
Square Calculator: Area, Perimeter, Diagonal
Find the area, perimeter, diagonal, inradius and circumradius of a square from its side, diagonal, perimeter or area.
Rectangle Calculator: Area, Perimeter, Diagonal
Find the sides, area, perimeter, diagonal and angle between the diagonals of a rectangle from two sides, a side and the diagonal, or the perimeter and area.
Rhombus Calculator: Area, Diagonals, Perimeter
Find the area, perimeter, diagonals, angles, height and inradius of a rhombus from a side and angle, the diagonals or a side and height.
Trapezoid Calculator: Area, Height, Midsegment
Find the area, height, midsegment, perimeter and angles of a trapezoid from the bases and height, all four sides, or for an isosceles trapezoid.
Circle Calculator: Area and Circumference
Find the area and circumference of a circle from the radius, diameter, circumference or area, and the area of an annulus. Exact answer in terms of π.
Triangle Calculator: Sides, Angles, Heights, Medians
Solve a triangle from SSS, SAS, ASA, AAS or SSA: law of sines and law of cosines, all angles, heights, medians, bisectors, radii and an existence check.
Parallelogram Calculator: Area, Perimeter, Diagonals
Find the area, perimeter, diagonals, heights and angles of a parallelogram from a side and height, two sides and an angle, or the diagonals and angle.
Regular Polygon Calculator: Area, Angles, Diagonals
Find the side, area, perimeter, radii, interior angle and number of diagonals of a regular polygon from the number of sides and one value.
Circular Sector and Segment Calculator: Arc Length, Area
Find the arc length, sector area, chord, height and area of a circular segment from the radius and angle, the arc length or the chord.
Pythagorean Theorem Calculator: Hypotenuse and Leg
Find the hypotenuse from the legs or a leg from the hypotenuse, the area and angles of a right triangle, and check whether a triangle is right.
Pyramid Calculator: Volume, Slant Height, Surface Area
Find the volume, slant height, lateral edge and surface area of a regular pyramid, a frustum and a regular tetrahedron.
Ellipse Calculator: Area, Perimeter, Eccentricity
Find the area, perimeter, focal distance and eccentricity of an ellipse from its semi-axes.
Cone Calculator: Volume, Slant Height, Surface Area
Find the volume, slant height, lateral and total surface area of a cone and a frustum of a cone.
Sphere Calculator: Volume and Surface Area
Find the volume and surface area of a sphere from the radius, diameter, volume or area, and the volume of a spherical cap.
Cylinder Calculator: Volume and Surface Area
Find the volume, base area, lateral and total surface area of a cylinder from the radius or diameter and height. Exact answer in terms of π.
Cuboid Calculator: Volume, Surface Area, Diagonal
Find the volume, surface area and diagonal of a rectangular cuboid from its dimensions, and the height from the volume or diagonal.
Prism Calculator: Volume and Surface Area
Find the volume, base area, lateral and total surface area of a regular n-gonal prism and a right prism.
Cube Calculator: Volume, Surface Area, Diagonal
Find the volume, surface area, face diagonal and space diagonal of a cube from the edge, a diagonal, the volume or the area.
Quadrilateral Area Calculator: Diagonals, Sides and Angles
The area of any quadrilateral from the diagonals and angle, or from the sides with a diagonal or angles.
Annular Sector Calculator: Area, Arcs and Perimeter
The area of an annular sector, arc lengths and perimeter from two radii and an angle, with a figure.
Octahedron Calculator: Volume, Surface Area and Radii
The edge, volume, surface area and sphere radii of a regular octahedron from one value.
Golden Ratio Calculator: Whole and Parts of a Segment
The whole segment and the larger and smaller parts in the golden proportion from one known value.
Midpoint Calculator: Midpoint of a Segment
Find the midpoint of a segment, the point dividing a segment in a given ratio and the endpoint from the midpoint in 2D and 3D.
Distance Between Two Points Calculator
Find the distance between two points from their coordinates in 2D and 3D with an exact answer and a step-by-step solution.
Equation of a Line Calculator: Two Points, Slope, General Form
Find the equation of a line through two points, from a point and a vector or the slope: general, slope-intercept, symmetric, parametric and intercept forms with a graph.
Trigonometry Calculator: sin, cos, tan and Degrees to Radians
The calculator finds the sine, cosine, tangent and cotangent of an angle in degrees or radians, converts degrees to radians, shows the quadrant, signs and reduction formulas. Exact values with roots.
Clock Angle Calculator
The calculator finds the angle between the hour and minute hands for any time, draws the clock face and shows a step-by-step solution.
Angle Converter: Degrees, Radians, Arcminutes, Gradians
Angle converter: degrees, arcminutes, arcseconds, radians, gradians and turns. Conversion with a solution and a table.
- Plane geometry — studies shapes on a plane, such as triangles, squares, circles, and other polygons. The main theorems in this field include the Pythagorean theorem and the properties of angles.
- Stereometry considers three—dimensional shapes such as cubes, spheres, cones, and cylinders. She studies the volumes and surface areas of these shapes.
- Analytical geometry uses coordinates and algebraic methods to study geometric objects. It allows you to represent geometric shapes using equations.
- Continuous geometry — explores more complex structures such as manifolds and topological spaces.