# 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.