# All online calculators

- PlanetCalc statistics
- 3d coordinate systems
Transforms 3d coordinate from / to Cartesian, Cylindrical and Spherical coordinate systems.

- A1Z26 cipher
A1Z26 is very simple direct substitution cypher, where each alphabet letter is replaced by its number in the alphabet.

- Acceleration of gravity
Acceleration of gravity calculation on the surface of a planet. It's possible to calculate the acceleration above the surface by setting the sea level. But it won't be possible under thesurface - this is a wrong formula.

- Accretion and discounting of annuity payments
- Age
Calculate your age with minute precision

- Age calculator
This calculator displays age of a person in years, months, days, and total days, given the birthday date

- Air Flow Calibration
This calculator is used to set the air flow rate through a grain bin equipped with an aeration fan. It assumes that the air flow can be controlled with baffles, spill gates or variable fan speed. It requires an air flow meter or anemometer. This calculator determines the air speed needed at the top collar of bin in order to achieve the desired air flow rate (CFM/bu Cubic Feet per Minute per bushel).

- Alcohol amount in the aqueous alcohol solution
Defines the mass and volume concentration of ethanol in the solution of two liquids with different levels of alcohol.

- Altitude of a triangle
This online calculator computes the length of a altitude of a triangle, given the lengths of edges of a triangle.

- Altitude Pressure
This calculator uses barometric formula to find out the pressure at the given altitude

- Analytical performance indicators
Calculation of derived analytical indicators of time series

- Angle between two vectors
This online calculator finds the angle between two vectors

- Angle bisector of a triangle
This online calculator computes length of angle bisector given the lengths of triangle edges

- Angular size, linear size and distance
These calculators computes value of angular size or linear size or distance from the other two's

- Angular velocity and linear velocity
This online calculator converts angular velocity to linear velocity for given radius

- Antilogarithm
Antilogarithm calculator

- Apartment sale tax
Apartment sale tax

- Apartment sale tax in Russia
Apartment sale tax in Russian federation according to 2017 legislation changes

- Apparent temperature
This online calculator computes apparent temperature, taking into consideration wind speed and relative air humidity. It uses Australian Bureau of Meteorology formula