All online calculators

Regular expression tester

This online calculator allows user to experiment with regular expressions.

Created on PLANETCALC

Regular expressions sandbox

Regular polygon, number of sides and length of side from incircle and circumcircle radii

This online calculator finds number of sides and length of side of regular polygon given the radii of incircle and circumcircle

Created on PLANETCALC

Regular polygon, number of sides and length of side from incircle and circumcircle radii

Digits after the decimal point: 3
  • Secant method

    The secant method is a root-finding algorithm that uses a succession of roots of secant lines to better approximate a root of a function f.

  • Second, third and other derivatives

    Evaluates first, second third and other derivatives of a single argument function

  • Shadow length

    Gives a vertical object shadow length for given coordinates and time. Also calculates shadow growth during whole day.

  • Shannon Entropy

    This online calculator computes Shannon entropy for a given event probability table and for a given message

  • Side length of a right triangle

    Calculates the side length of a right triangle from two other sides using Pythagorean theorem. Created by user's request

  • Side length of a triangle

    This calculator computes side length of a triangle given two sides and angle between them (law of cosines)

  • Side length of the regular polygon

    Calculates the side length of the regular polygon circumscribed or inscribed to a circle. Created by user's request

  • Side of regular polygon from polygon area

    Calculates the side length of regular polygon given the area of the regular polygon and number of sides