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 Big Is An Acre? Explained

In this article we're going to look at the acre - a unit of area commonly used for measuring tracts of land. Did you know that during the Middle Ages, an acre was defined as the amount of land ploughable in one day by one man and an ox? Not very specific, then - especially if your ox is feeling part...

How Many Steps Are In a Mile?

Research suggests that the number of walking steps in a mile for a person of average height and weight is between 2,000 and 2,500 steps. That figure decreases to between 1,400 and 1,700 steps per mile when running, due to the increase in stride length...

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

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