Online Calculators since 2009
We have lots of excellent calculators, each with supporting tutorials and example of how to calculate ratios in different ways. You can add, multiply, divide, subtract, work out shares, find equivalent ratios, find the missing ratio for two ratios, three ratios and more. Simply select the calculator you need to help you with your calculations, revision and math coursework. You can watch our short video which provides an introduction to ratiosand the associated calculations and calculators you can use for free at iCalculator™.
The ratio calculators and tutorials are split into six separate categories to help you find what you need, these are:
Ratios are an excellent way of expressing paired and grouped values but they are not always practical when completing calculations. The following calculators allow you to convert ratios to other formats and other formats to ratios.
These calculators are designed to test your mental arithmetic and provide a bit or fun. each ratio test has a leader board so you can see if you can become the number 1 in the world for ratio calculations. The tests include ratios, fractions and percentages, this is because ratios can be expressed as fractions and percentages and it is worth training your brain to recognise and compare those values, the more you practice, the more you will become familiar with the relative values when comparing ratio, fraction and percentage values.
The following calculators provide good example of ratios in every day life.