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Circumference of an ellipse

The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.    

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Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.              
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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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Statutory interest calculator - calculating the percentage of online in Poland

Jak obliczyć odsetki ustawowe?
Free online calculator statutory interest - can quickly calculate statutory interest.              
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Perpetual calendar

jak obliczyć dzień tygodnia na podstawie daty?
Calculator gives what day of the week for the date specified by the user.                  
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Date calculator

Calculator allows you to calculate the date, which will be after a specified number of days, months and years from a certain date.
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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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Calculator burning fuel, LPG​​, gasoline for your car

Calculator based on the length of stay and average fuel cost of fuel (gasoline or gas) will calculate how much you pay for fuel.