Calculators and Converters

Choose from a multitude of free calculators and converters in the areas of finance, health, cooking, math and science for everyday, general use.

Weights and Measures - a Poem

It is common knowledge that I love receiving communications from my visitors. This week, Robert Morrice sent me this wonderful poem and has kindly allowed me to share it with you. It's titled Weights and Measures. Enjoy...Yards are, as everyone knows,Length from fingertip to noseAnd twenty two make...

How to Calculate Percentages

How many cents are in a dollar? Correct! 100. How many years are in a century? Yep, 100. How many legs are on a centipede? Usually about 70, actually. Sorry. I guess the Romans who came up with the name couldn't get one to sit still for long enough. Anyway, cent means one hundred, and percent (%) me...

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.

How To Measure Your Waist

Whether you're ordering clothes online, monitoring your weight, or designing a bespoke bucket chair for your space-shuttle to the moon (look, the world is on fire; it's OK to have a plan B), you need to be able to measure your body accurately. Here's how to get the digits for your waist.

Calculator suggestions

I love hearing your feedback. So, please feel free to suggest any calculators or converters that you feel would be a useful addition to this website. Or, if you have any ideas for extra features, then please suggest those also. You can contact me here.