Math

Number cheerful

Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.

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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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Life

Rainwater tank

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

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Financial

Gross-Net Calculator prices of goods and services in Poland

Jak obliczyć kwotę brutto z uwzględnieniem podatku VAT? Jak obliczyć kwotę netto z uwzględnieniem podatku VAT?

It allows you to calculate the amount of gross or net price including VAT

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Math

Calculation fields of plane figures

Jak obliczyć pole figury płaskiej?
Jak obliczyć pole kwadratu?
Jak obliczyć pole prostokąta?
Jak obliczyć pole trójkąta?
Jak obliczyć pole trapezu?
Jak obliczyć pole koła?

Calculator helps you calculate the area of the selected shape.

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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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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.