Rule of Three Calculator R3

Calculator that performs the simple and inverse rule of 3 and the percentage

Calculator R3 is a calculator that allows you to efficiently calculate the simple and inverse rule of 3.

It has a dedicated button, which allows you to copy the result to be used anywhere. This allows you to have records at hand with ease.

As an additional function, a section for calculating percentages is configured, which is of great help in the case of nursing, veterinary medicine, academia and research.