# All online calculators

- VARIANT DATE to datetime string
This online calculator converts VARIANT DATE (double) value to datetime string.

- Vigenère cipher
Calculator encrypts entered text by using Vigenère cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed.

- VOIP call bandwidth
The calculator works out bandwidth required to handle given number of VOIP calls with given audio codec.

- Volume of body given the buoyant force
This calculator computes the volume of body given the buoyant force and density of the body, assuming that the buoyant force equals gravity force.

- Volume of geometric shapes
Calculates volume of geometric shapes: cube, prism, pyramid, frustum, cone, cylinder, sphere, ellipsoid.

- Volume of the cylinder segment
Calculates volume of the cylinder segment

- Week number of a given date
Week number of a given date. Europe (ISO 8601) standard method, US method and simple numeration method.

- When it becomes profitable to pay the tax as a sole proprietor?
The calculator allows you to compare the taxes paid by an sole proprietor in the simplified taxation system and the individual.

- Wind Chill Index
This online calculator computes Wind Chill Index using Wind Chill Formula from Environment Canada

- Wind energy and wind power
This online calculator computes kinetic energy of wind and wind power

- Z-score / Standard score
This online calculator computes the standard score of a raw score from the given mean of the population and the standard deviation of the population.

- Z-score from P-value
This online calculator calculates z score from p value

- Сomputer algebra
Derives a formula from input formulas and input data to calculate remained parameters