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Quickly determine the volume of multiple geometric shapes.

Quickly determine the perimeter and area of multiple geometric shapes.

Determine your daily calorie requirements.

Calculate photos' depth of field and more.

Calculate the points needed for a Disney vacation.

Math app with full-featured algebra capabilities.

A tool that helps you tracking the time you work on your projects.

Solve the four basic elements of Ohm

Calculate/compare telescope eyepiece values.

This simply scales up the speed of a model train to the speed of train.