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Life

# Alcohol Calculator - witrualny breathalyzer online converter

ile alkoholu we krwi?
obliczanie zawartości alkoholu we krwi

Calculator allows you to calculate the approximate concentration of liquor in the blood by Erik Widmark formula.

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Life

## Rainwater tank

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

## Calculate how much you drink pure ethanol

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.

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Life

## Battery charging time calculator

Calculator to the data calculates the estimated time of charging.

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## Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.

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## Number of square-triangle (square triangular number)

Number of square-triangle has the properties of a square and a triangular number.

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## Calculator VAT refund for building materials

The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.

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## Calculate how much you spend on cigarettes

Calculator helps you calculate the annual expenditure on cigarettes.