All online calculators

  • Acceleration of gravity

    Acceleration of gravity calculation on the surface of a planet. It's possible to calculate the acceleration above the surface by setting the sea level. But it won't be possible under thesurface - this is a wrong formula.

  • Age

    Calculate your age with minute precision

  • Altitude of a triangle

    This online calculator computes the length of a altitude of a triangle, given the lengths of edges of a triangle.

  • Altitude Pressure

    This calculator uses barometric formula to find out the pressure at the given altitude

  • Analytical performance indicators

    Calculation of derived analytical indicators of time series

Alcohol amount in the aqueous alcohol solution

Defines the mass and volume fraction of ethanol in the solution of two liquids with different levels of alcohol.


The percentage of ethyl alcohol in the aqueous-alcoholic solution

Temperature of the mixed liquids in degrees Celsius

Digits after the decimal point: 2

Area of a convex quadrilateral. Example of creating a calculator.

This online calculator calculates area of a convex quadrilateral given diagonal values and value of angle between them. Article also describes the process of creating a calculator.


Area of a convex quadrilateral

Digits after the decimal point: 2