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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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

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.

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Life

Rainwater tank

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

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Medical

The risk of detection of osteoporosis in men

Calculator based on input determines the weight and age of the patient to detect the risk of osteoporosis.

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Building

Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.