# All online calculators

- Mathematical competition tasks
Calculator solving some mathematical competition task

- Matrix Multiplication
Matrix Multiplication

- Matrix Rank
This online calculator determines the rank of a given matrix

- Matrix Transpose
Matrix Transpose

- Mayan calendar, 2012, the end of the world.
About 2012, the end of the world and Maya

- Mean, variance and standard deviation of discrete random variable
This online calculator calculates mean, variance and standard deviation of random variable entered in the form of value-probability table

- Median of a triangle
This online calculator computes median of a triange given triangle sides

- Modular inverse of a matrix
This calculator finds modular inverse of a matrix using adjugate matrix and modular multiplicative inverse

- Modular Multiplicative Inverse
This calculator calculates modular multiplicative inverse of an given integer a modulo m

- Molar mass of the substance
Calculates the molar mass of the substance using atomic mass units from the periodic table

- Monthly issue number generator
Issue Number Generator for unnumbered magazines & comics & newspapers. If magazine did not print issue numbers, only months, it can number them all, f.e. all months starting with specified date up to specified date

- Moonphases
Moon's age and phase calculation

- Multiplication in columns
Calculator shows results of multiplying in columns, can be used to check answers

- Nautical measurement units
Nautical mile, sea mile, cable

- Negative Binomial Distribution. Probability density function, cumulative distribution function, mean and variance
This calculator calculates negative binomial distribution pdf, cdf, mean and variance for given parameters

- Newton's method
This online calculator implements Newton's method (also known as the Newton–Raphson method) for finding the roots (or zeroes) of a real-valued function.

- Nominal interest rates сomparison
Сalculation of the effective interest rates for a given nominals

- Normal distribution
Plots the CDF and PDF graphs for normal distribution with given mean and variance.