# All online calculators

- Solution of a system of 3 linear equations
Solution of a system of 3 linear equations with 3 variables

- Solution of buckets and tank problem
This online calculator find a solution to the question how to fill tank with certain amount of water using two buckets of different size

- Solution of nonhomogeneous system of linear equations using matrix inverse
Solution of nonhomogeneous system of linear equations using matrix inverse

- Solution of quadratic equation
Solution of quadratic equation, including complex roots

- Solving a system of equations of first degree with two unknowns
This calculator solves a system of equations of first degree with two unknowns.

- Solving limit problems using L'Hospital's Rule
Solving 0/0 and ∞/∞ limit problems using L'Hospital's Rule.

- Sound Speed in Gases
This online calculator computes speed of sound in an ideal gas.

- Space object velocity
It calculates the circular orbital velocity, escape velocity and planetary system escape velocity for the given planet parameters.

- Spearman's correlation coefficient
Calculates Spearman's rank correlation coefficient

- Sphere
- Spherical cap and spherical segment
This calculator computes volume and surface area of spherical cap and spherical segment

- Spherical sector
Calculates surface area and volume of Spherical sector by radius and height

- Square Door Tank Volume
Use this calculator to determine tank volume if you've modified the tank for square doors.

- Square Stack Calculator
Due to friction loss when using a rectangular stack, this will calculate the equivalent size of a round stack with the same airflow.

- Squarefree polynomial factorization
The calculator extracts square factors from the input polynomial.

- Standard Galactic Alphabet decoder
This online calculator can decode message written with standard galactic alphabet symbols

- Strength of alcoholic cocktail
Calculates volume fraction of alcohol in a beverage made of 3 other beverages.

- Student t-distribution
Calculates cumulative distribution function value and probability density function value for Student t-distribution. Quantile calculator evaluates Student quantiles for given probability and specified number of degrees of freedom.

- Substitution cipher breaker
This online calculator tries to decode substitution cipher without knowing the key. It uses genetic algorithm over text fitness function to break the encoded text

- Substitution Cipher Tool
The tool to encrypt/decrypt messages with simple substitution cipher given as key. It is also useful for manual cryptanalysis of substitution cipher - when you have message written in English alphabet partially decrypted with automatic tool and want to tweak the key.