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Chemical
Radioactive decay
The calculator calculates how much radioactive material remains after a certain period of time.
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Chemical
Calculator enthalpy
Enthalpy calculator is used to calculate the heat transfer during the process kwazistatycznego occurring in a closed thermodynamic system under constant pressure (isobaric process).
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Chemical
Dilution of solutions
Legend of given volume and calculates the concentrations of the solutions before and after dilution of the volume of solution added is calculated.
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Chemical
Molar concentration of mass and volume
Calculator allows to determine the molar concentration of the solution.
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Financial
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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Financial
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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Building
Insulation of wall
Jak policzyć izolację ścian?
Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Math
Multiplication table
Multiplication table 20 × 20 gives the opportunity to multiply their arbitrary natural numbers (1-20).
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Verifiers
Verification of the ISSN
Calculator allows you to verify the number entered ISSN (International Standard Serial Number serial publication). FAQ: How ISSN number?