All online calculators

  • Sun position at a given date. Azimuth and elevation table.

    Calculation of azimuth and elevation of the sun above the horizon for a given position and time. Table with one hour increments.

  • Sunrise and sunset calculator

    Sunrise/Sunset calculation for given latitude and longitude or for given city. Source: Almanac for Computers, 1990 published by Nautical Almanac Office United States Naval Observatory Washington, DC 20392

  • Sunrise and sunset time

    This online calculator is intended for sunrise and sunset time calculation for given place and date. The calculator algorithm is obtained from the great book of Oliver Montenbruck and Thomas Pfleger "Astronomy on the Personal Computer".

  • Surface area of a cube
  • Surface tension. Weight and volume of the drop of liquid

    This online calculator calculates the weight and the volume of the drop given the surface tension, diameter of the capillary tube, and density of the liquid

  • Symbol frequencies table

    This online calculator builds symbol frequency table for a given message

  • Synthetic division

    A simple method of polynomial division.

  • Tank volume

    Calculator computes tank volume given its length, diameter and walls depth. Created by user's request.

  • Tank Volume Calculators

    Use one of these to determine your tank's volume.

  • Tax deductions from personal income tax
  • Team combinations with conditions like team roles and limits

    This online calculator generates all possible combinations of 11 from 22 using limiting conditions like team roles and limits

  • Telecommunications traffic, Erlang

    The calculator gives telecom traffic in Erlang for given time span and total call duration.

  • Temperature scales

    Conversion between different temperature scales

  • Text fitness

    This online calculator computes text "fitness". That is, how similar the given text to other texts written in English language.

  • Text fitness (version 2)

    This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses frequencies of unigrams, bigrams and trigrams to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

  • Text fitness (version 3)

    This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses logarithms of probabilites with normalization to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

  • The amount of material for the mesh

    It's required to produce a mesh with predetermined length and width, roughly square meshes from tape with predetermined width. It is necessary to calculate the total length of the tape.

  • The basal metabolic rate

    This calculator computes BMR calories

  • The buoyant force

    This calculator computes the buoyant force and weight of the liquid displaced, given the volume of body in water

  • The calculation of amortization for tax purposes

    The methods and procedures for calculating amortization for tax purposes in accordance with Article 259 of the Tax Code, taking into account the changes to the federal law of 27 July 2006 N 144-FZ.