- Cartesian and polar two-dimensional coordinate systems
This online calculator converts polar coordinates to cartesian coordinates and vice versa.

- Celsius to Fahrenheit calculator explained
- Chande momentum oscillator indicator
Description of Chande momentum oscillator indicator, drawing a graph on candles

- Chemical equation balance
This online calculator balances equations of chemical reactions.

- Circle formulae
Circle formulae

- Circular sector
Calculates area, arc length, perimeter and center of mass of circular sector

Clapeyron-Mendeleev equation. The relationship between the number of moles of gas, the temperature, volume and pressure.

- Circular segment
Can calculate area, arc length,chord length, height and perimeter of circular segment by radius and angle.

- Circumcircle of a triangle
This online calculator determines the radius and area of the circumcircle of a triangle given the three sides

- Combinatorics. Combinations, arrangements and permutations
This calculator calculates number of combinations, arrangements and permutations for given n and m

- Combinatorics. Generator of combinations.
Combinatorics. Generator of combinations of m from n.

Given coordinates of two locations in decimal degrees, this calculator displays constant azimuth, distance and compass points for different compass roses.

- Compass Points
The calculator gives name of compass point by direction angle in degrees.

- Compass, magnetic and true course.
Calculates true, magnetic and compass direction(course, bearing) by given direction, magnetic declination and deviation.

- Complex fraction
This online calculator evaluates arithmetic expressions with common or complex fractions.

- Compound interest
This calculator computes compound interest

- Compound interest. Arbitrary payment
Compound interest calculator with the possibilityto set all the parameters of the compound interest formula

- Cone
- Cone development
Calculator of right circular cone / truncated right circular cone development

- Conversion between imperial and metric units of area
These calculators convert imperial to metric and metric to imperial units of square

Pages: