Calc

Calculators and Converters

Choose from a multitude of free financial calculators, imperial to metric converters, math calculators, health calculators and other useful tools for general use.

Whether you're looking to work out a loan repayment schedule, work out the compound interest on your savings or plan for retirement, the financial calculators are there to assist you. In addition, you can find a huge variety of different metric converters and a growing collection of math and health calculators. Please select a calculator or converter from the top menu or the selection below:


A heaped teaspoon of sugar

How many grams of sugar are in a teaspoon?

Mary Poppins once famously claimed that, “A spoonful of sugar helps the medicine go down”, but given that the children in her care were subsequently treated for multiple cavities and type 2 diabetes*, could she have made an error in her calculations? Don’t find yourself in the same situation, defend...


The formula for BMR

How to calculate your BMR

You’ve almost certainly heard of your BMI, the figure representing the relationship between your height and weight, but have you heard of your BMR? These three little letters could provide the information you need to kick-start a successful weight-loss regime (and sorry, but no: they do not stand fo...


Girl holding calculator with decimal displayed on

How to convert a decimal to a fraction

Some decimals are so familiar to us that we can instantly see them as fractions: if your sister is 14.5 years old, you know that she’s 14 1/2; if you buy a bag of potatoes weighing 0.75kg, you know that it’s 3/4 of a kilo; if you give your sister a 3/4 kilo bag of potatoes for her 18th birthday, you...


Man stacking coins demonstrating compounding

Compound interest formula - explained

An in-depth look at the compound interest formula as we break down how to calculate compound interest. The concept of compound interest is that interest is added back to the principal sum so that interest is earned on that added interest during the next compounding period.


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Your Comments and Suggestions

I love hearing your feedback. So, please feel free to suggest any extra units and measures for the imperial and metric conversions.

If there are any other finance calculators or converters that you feel would be a useful addition to this website, or any ideas for extra features, then please suggest those also. You can contact me here.