# All online calculators

- Luhn algorithm
Calculates digit sequence checksum using Luhn algorithm (mod 10), calculates validation digit (the digit to be appended to the digit sequence to make whole sequence checksum equal to zero).

- Making up words out of the syllables
Calculator sorts out all combinations of syllables to make words. English homework helper.

- Mann-Whitney Test
This online calculator performs the Mann–Whitney U test (also called the Mann–Whitney–Wilcoxon (MWW), Wilcoxon rank-sum test, or Wilcoxon–Mann–Whitney test).

- Map of France regions
Simple image map of France regions to illustrate usage of SVG image maps

- Matching lines with regular expression
This calculator matches lines in text using regular expression. It outputs line numbers and lines, which were matched and which were not matched, separating them.

- Math equation simplification
Simplifies math equation with single variable (x). In eqation you may also use integer and fractional numerical constants arithmetic operations, trigonometric and hyperbolic functions.

- Math equation syntax
Math equation samples.

- Math operations on degrees
This online calculator supports simple mathematical operations, addition/subtraction/multiplication/division, on degrees

- Math worksheets generator for elementary school
Random worksheets, which are generated automatically from user parameters.

- 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

- 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

- Matrix triangulation
Matrix triangulation with Gauss and Bareiss methods

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

- McDonald's meal nutrition facts
Nutrition facts of McDonald's meals according to http://www.mcdonaldsmenu.info

- 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

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