Rail Fence, Zig-Zag cipher online encoder and decoder. Encrypt and decrypt any cipher created in a Rail Fence, Zig-Zag cipher.

Use this calculator to calculate the "wind chill" temperature or apparent temperature, i.e. the temperature equivalent to humans, caused by the combined effects of air temperature and wind speed

ROT47 cipher online encoder and decoder. Encrypt and decrypt any cipher created in a ROT47 cipher. You can use any shift and additionally a key for more precise text encoding.

Vernam cipher online encoder and decoder. Encrypt and decrypt any cipher created in a Vernam cipher.

Calculate how much you spend smoking, so how much you could save after quitting smoking.

Calculator of the arithmetic mean of a series of distributing class intervals.

Playfair cipher online encoder and decoder. Encrypt and decrypt any cipher created in a Playfair cipher.

The calculator is used to test your eyesight and recognize the difference in color shades. After clicking on the first lighter field, the calculator will change colors and the countdown will begin. Each test takes 15 seconds. Search for a lighter field and click on it. Each subsequent test is more difficult. The test will be aborted if you do not give the correct answer within 15 seconds or if you make a wrong choice three times.

With the Fractions Calculator, you can subtract any two mixed numbers or proper and improper fractions.
Fractions Calculator will show you the result of operations on fractions step by step and will give you explanations of the operations performed to subtracting fractions. You will learn how to simplify fractions, how to find a common denominator, how to find the least common multiple and the greatest common divisor.

With this calculator you will calculate the mean square or arithmetic mean of the squares also known as the power mean of the second order.

With this calculator you can calculate the force, mass and acceleration from Newton's Second Law of Motion.

You can calculate step by step any system of linear equations, both homogeneous and inhomogeneous with any number of unknowns by the Cramer's method. As a result, in addition to the solution, you also get a complete analysis and presentation of calculations step by step.

Thanks to the mathematical calculator, you can easily calculate the determinant of the matrix, find the complement matrix, the transposed matrix, and the inverse matrix.

Thanks to the calculator, you can easily calculate the area of a circle, the circumference of a circle, the area of a circle segment and the length of the circle arc.

Flooring Calculator is a complete tool to calculate the costs and materials needed to lay a wooden floor. Thanks to the calculator, we will find out how many packages of panels, underlay, vapor barrier foil under the panels, skirting boards, connectors, corners and plugs will be needed, as well as the cost of all materials including labor.

Using the calculator, you can easily and quickly calculate the sum of the Fibonacci sequence, find a value or find the nth term.

Calculate the diagonals of a concave deltoid, kite, side lengths, surface area, perimeter and radius of the inscribed circle. Each size can be calculated using many formulas, just indicate what data we have.

The calculator will help you calculate deltoid (kite) diagonals, side lengths, area, perimeter and radius of the inscribed circle. Each size can be calculated using many formulas, just indicate what data we have.

The PV calculator helps us to calculate the current value of an investment, i.e. the PV (present value). The PV calculator calculates the amount we need today to obtain the given value in the future after a certain number of years and calculating the interest due, assuming that they will be capitalized (added to the capital) with the specified frequency (e.g. weekly, monthly, quarterly, semi-annually, annually) ie how much do you need today to get X in the future

With this statistical calculator, you will learn how to calculate a linear regression step by step.