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Fractions change form

The calculator converts a fraction to a decimal or vice versa.


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Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.      
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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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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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Insulation of wall

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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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The distance calculator between cities Polish

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BMR Calculator - Basic Metabolic - PPM

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The calculator calculates the BMR (Basal Metabolic Rate). BMR - the lowest rate of metabolism that occur in the human body, necessary to sustain basic life functions, which is located in standby mode under complete peace of physical and mental comfort that the 12 hours before the test, do not eat any meals, after 3 days of diet and protein-free after at least eight hours of sleep.