# All online calculators

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

- Coillator 3
- Collinearity of points whose coordinates are given
This online calculator finds if points are collinear given their coordinates

- Collinearity of vectors in 2d space
This online calculator determines if 2d space vectors are collinear

- Combinations generator
This online calculator generates all possible combinations of items from different sets/lists

- 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.

- Combinatorics. Permutation generator from N to M with repetitions.
Combinatorics. Permutation generator from N to M with repetitions.

- Combinatorics. Permutation generator from N to M without repetitions.
Combinatorics. Permutation generator from N to M without repetitions

- Commission calculator
This online calculator finds the commission from the sale price and the commission rate, the sale price from the commission and the commission rate, and the commission rate from the sale price and the commission

- Comparing prices using cost per square meter
This calculator helps to compare prices by calculating cost per square meter

- Compass point between two locations
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.

- Complementary color
This calculator shows complementary colors for entered colors

- Completing the square
This online calculator allows you to use completing the square technique to complete the square.

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

- Complex numbers
The calculator displays complex number and its conjugate on the complex plane, evaluate complex number absolute value and principal value of the argument . It also demonstrates elementary operations on complex numbers.

- Complex polynomial value calculation
The calculator evaluates polynomial value. The polynomial coefficients can be either real or complex.

- Compound interest
This calculator computes compound interest