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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.


How Long Does it Take to Walk a Mile?

Typically, adults walk at a speed of 3 to 4 miles per hour, and therefore walk a mile in around 15 to 20 minutes. Some people will be faster or slower than this, and walking speed can even be influenced by age and gender, as well as fitness level.Can you calculate walking speed?When you're planning...


How Much is a Ton?

A ton (t) is a unit of mass (i.e. weight) equivalent to 2000 pounds, or 910kg. It differs from the 'tonne', which weighs 1000kg. Both the short ton and long ton are equivalent to 20 hundredweight, but with the hundredweight defined differently under each system...


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.


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