The harmonic mean

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

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.      

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

The calculator calculates the volume of a cylinder with using of height and area.

Calculator allows you to calculate the probability of a given number of successes with a specified number of trials and probability of success.

The calculator is designed to count the amount of words and letters in the text

Multiplication table 20 × 20 gives the opportunity to multiply their arbitrary natural numbers (1-20).

Calculator helps you calculate the area of ​​the selected shape.