All online calculators

• 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.

• 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.