Calculator - dosage of CO2 in the aquarium

The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description      

On the basis of the data entered, the amount of drink and the percentage of alcohol content calculator calculates pure ethyl alcohol that we consume.

Calculator to the data calculates the estimated time of charging.            

For a given date of birth calculator calculates the corresponding Western and Chinese astrological sign (zodiac).                            

The calculator calculates the sugar content of a drink in degrees Plato and Brix and the volume of alcohol in the solution based on the relative density of the solution.