All online calculators

• Russian text typed in English letters

  Restores the Russian phrase, accidentally typed on the English keyboard layout.

• Saturation vapour pressure

  This online calculator computes saturation vapour pressure for given temperature and atmospheric (barometric) pressure

• Seasonal fluctuations. Seasonal indices. Constant mean method.

  The study of periodic (seasonal) fluctuations. Calculation of average seasonal index by constant mean method.

• Seating chart

  This calculator tries to find seating chart combinations taking into account preferences of students.

• 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

• Select a phone number from the text

  This calculator uses regular expressions to select phone numbers from a large block of text

• 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

• Shipment weight

  Calculating the weight by the volume of shipment. Created by user's request.

• Shoe size comparison

  This calculator converts european shoe size to its english and US counterparts.

• 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

• Simple Interest

  Calculates simple interest

• Simple Interest Daily Rate
• Simple math in any numeral system

  This online calculator supports simple math (addition, subtraction, division, multiplication and power) for numbers expressed in any numeral system - binary, octal, hexadecimal, from the base 2 to base 36

• Simple Moving Averageе

  Simple Moving Average calculation based on candles

• Sine wave

  Construction of a sine wave with the user's parameters

• Sobriety calculator

  This online calculator calculates how long you’ve been clean and sober down to the second.