- Mathematical calculator
Mathematical calculator is used for evaluation math expressions with arithmetic operations (+-/*^) and functions: sqrt - square root, exp - exponential function, lb - binary logarithm, lg - decimal logarithm, ln - natural logarithm, sin - sine, cos - cosine, tan - tangent, cot - cotangent, sec - secant, csc - cosecant, arcsin - arcsine, arccos - arccosine, arctan - arctangent, arccot - arccotangent, arcsec - arcsecant, arccosec - arccosecant and others

- 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

Calculator solving some mathematical competition task

- Meters per second and kilometers per hour
This simple calculator convert meters per second to kilometers per hour and vice versa

- 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

- Moonphases
Moon's age and phase calculation

- Mortgage calculator

This online calculator computes median of a triange given triangle sides

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

- Nautical measurement units
Nautical mile, sea mile, cable

- 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.

- Normal force
This online calculator calculates strength of the normal force from the mass of the object, the gravitational field strength and the angle of the inclined surface measured from the horizontal.

- Number of agents in call center
The calculator works out number of call center agents using Erlang C formula for given call load and service level.

- Number of days in a year
- Number of flagstones for paving
This calculator will help you to estimates number of flagstones needed for paving

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