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Math

Number of tetrahedral

Tetrahedral numbers are the natural numbers, for which it is possible to construct a tetrahedron formnego of bullets. They are a special case of the pyramidal numbers.        


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Math

Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.              
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Math

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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Math

Trigonometric functions calculator

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

Inductance linear guide

The calculator calculates the inductance of the linear guide based on input of diameter and length.              
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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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Verifiers

NIP correctness in Poland

Jak sprawdzić poprawność numeru NIP?
Verifier allows you to validate the tax identification number entered
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Medical

GFR - glomerular filtration rate

Glomerular filtration rate (called glomerular filtration rate, GFR) - the amount of plasma filtered per unit time by the so-called glomeruli. primary urine. Is usually given in ml / min. GFR allows the assessment of renal function.                  
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Calendar

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.