All online calculators

  • Area of a convex quadrilateral. Example of creating a calculator.

    This online calculator calculates area of a convex quadrilateral given diagonal values and value of angle between them. Article also describes the process of creating a calculator.

  • Area of a quadrilateral

    This article lists several calculators for area of a quadrilateral

  • Area of an irregular quadrangle with the given sides

    Calculates an area of an irregular quadrangle with the given sides

  • Area of triangle by coordinates

    This calculator determines area of triangle, using its vertex coordinates in cartesian coordinate system

  • Arithmetic progression

    This online calculator computes last nth term of arithmetic progression and sum of the members

  • Atbash cipher

    This calculator allows you to encrypt and decrypt text with Atbash method

  • Average wage сalculation (for Russia)

    The calculator calculates the average wage, according to the decree of the Russian Federation government dated December 24, 2007 "On specifics of calculation of average wages" in edition of Russian Federation Government Resolution dated November 11, 2009.

  • Azimuth and solar elevation angle

    Calculation of azimuth and solar elevation angle by given the coordinates and time of observation. It's possible to input coordinates manually or by selecting from the directory of cities.

  • Baffle Plate Gap Calculator

    Use this to determine the baffle plate gap in a tank based on your throat size. Measure bell end depth using something the same width as your baffle plate or enter a zero if there is no belled end. The drawing is looking from the top down.

  • Ball radius calculated by volume
  • Bank card number validation

    The calculator checks a bank card number using Luhn algorithm, it also determines the card issuer according to Issuers handbook.

  • Barometric leveling
  • Base 64 encoding and decoding

    The calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter.

  • Battery discharge time depending on load

    This article contains online calculators which can calculate discharge times for specified discharge current using battery capacity, the capacity rating (i.e. 20 hour rating, 100 hour rating etc) and Peukert's exponent.

  • Bayes’ theorem

    This online calculator calculates posterior probabilities according to Bayes’ theorem.

  • Beaufort scale

    Conversion between wind speed measurement units including Beaufort numbers, km/h, m/s, mph, fps.

  • Bernoulli trials table

    This online calculator calculates probability of k success outcomes in n Bernoulli trials with given success event probability for each k from zero to n.

  • Bin packing problem

    Calculator solves bin packing problem by different heuristic algorithms. Created at the request of the user.

  • Bin packing problem 2

    Calculator solves bin packing problem with different heuristic algorithms and gives you a best. Created at the user's request.

  • Binary Coded Decimal (BCD)

    This online calculator converts decimal number to binary code in BCD notation and vice versa