Calculator expresses a given length through the different units.

This online calculator is designed to convert between different units of area.

This online calculator converts angle between degrees and time units (i.e. hours).

This calculator helps you to score your official practice tests results.

This online calculator lets you figure out your high school GPA. Even more, it provides you with editable conversion tables and weights, so you can tweak calculations in case you need it.

This online calculator compresses the entered string using the run-length encoding (RLE) method.

The page contains online calculators for converting from geographic coordinates to Gauss planar rectangular coordinates and back (the formulas for the Krasovsky reference ellipsoid are used).

The first online calculator on this page uses a Least Significant Bit steganographic method to hide a message in a digital image. The second online calculator reveals the message hidden by the first calculator.

This online calculator calculates static moments, moments of inertia and radii of inertia for flat cross sections of simple shapes

This calculator allows you to pick a selection of strings from a list at random. You can select with or without repeats. The calculator uses a random number generator built into Javascript.

This online calculator calculates the weighted average of the grades entered with weights. For comparison, the average grade is also displayed.

When filling domestic gas cylinders with liquefied propane, propane is dispensed by weight, in kilograms. This online calculator calculates the volume of gas in cubic meters by the weight of gas in kilograms and vice versa.

This calculator takes a list of strings as input and sorts them either in ascending or descending order based on the user's preference. Additionally, the calculator has an option to remove any duplicate strings in the input list before performing the sort.

This online calculator allows students to input their current grades for each course and displays the current average. It then calculates the number of B's needed to reach a B, if the current average is below a B, as well as the number of A's needed to reach both a B and an A.

The initial velocity is assumed to be 0. The final velocity cannot exceed the speed of light.

This online calculator calculates the declination of the Sun on a given date and the maximum altitude above the horizon on that day for a given latitude

This online calculator calculates the declination of the Sun on a given date and the maximum altitude above the horizon on that day for a given latitude

This online calculator calculates the start and end dates of polar night and polar day at a given latitude. The latitude of the observation site must be north of the north polar circle or south of the south polar circle.

This online calculator calculates the dates of zero shadow days at a given latitude. The latitude of the observation site must be south of the Tropic of Cancer and north of the Tropic of Capricorn.