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Map Scale Converter

Calculator allows to determine the actual distance corresponding to the distance on the map with the specified scale. If the map at 1:500,000 scale the input field, enter the value 500000.  
Podaj ułamkową część skali mapy


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Rainwater tank

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

Calculator to the data calculates the estimated time of charging.            
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ROCE - an indicator of the efficiency of investment

The calculator calculates ROCE on the basis of these pre-tax profits, total capital and current liabilities ROCE (called Return On Capital Employed) - an indicator of the efficiency and profitability of the investment, which is the capital of the company involved.            
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Resistivity and conductivity

The calculator calculates the resistivity and conductivity of the material from the resistance, cross-sectional area and the length of the element at 20 ° C.            
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Limit calculator, which entitles them to exemption from VAT in Poland

Calculator allows you to see what gives you the right amount of turnover for exemption from VAT if you started a business during the year.
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Calculator burn calories (kcal). How many calories you burn a day?

Ile kalorii spalamy? Ile kalorii potrzebuję?
The calculator calculates how many calories you burn per day based on the data entered.
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Pseudo-random number generator without repetition

Calculator generates random numbers without repetition from 0 to n-1.