This calculator calculates the area of a triangle using Heron's formula. This formula gives the area of a triangle from the lengths of all three sides. The formula can be found below the calculator.

This online calculator computes the median of a triangle given triangle sides

This online calculator computes the length of angle bisector given the lengths of triangle edges

This online calculator computes the altitude length of a triangle, given the lengths of sides of a triangle.

Calculates the side length of the regular polygon circumscribed or inscribed to a circle. Created by user's request

Calculates ellipsoid and spheroid volume and surface area.

This calculator determines the area of a triangle using its vertex coordinates in the cartesian coordinate system.

This calculator computes volume and surface area of spherical cap and spherical segment

Calculates surface area and volume of Spherical sector by radius and height

Calculates the area of the circumcircle and of the regular polygon from radius of circumcircle and number of sides

This online calculator computes the values of elementary trigonometric functions, such as sin, cos, tg, ctg, sec, cosec for an angle, which can be set in degrees, radians, or grads.

This calculator determines values of inverse trigonometric functions (arcsine, arccosine, arctangent, arccotangent, arcsecant, arccosecant) and outputs it with different measurement units (degrees, radians, minutes, etc)

Circle formulas

This calculator computes triangle angles for given triangle sides using cosine law

Construction of a sine wave with the user's parameters

This online calculator calculates area of a convex quadrilateral given diagonal values and value of angle between them. Article also describes the process of creating a calculator.