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This section of The Calculator Site contains interesting articles about finance, currency as well as instructional 'how to' features on converting between units.

Roman numerals 1 to 10 on black background.

How to Read Roman Numerals

You have to hand it to those Romans; for an empire that crumbled away at least 1,500 years ago they've left us with a heck of a legacy. And one of 'the things that the Romans have done for us' is to leave us a numbering system that, though occasionally mystifying, is still proving remarkably useful...

How to Calculate Square Footage

Whether you're shopping for carpet, or planning a landscaping or home improvement project, one essential concept is calculating square footage.Having to work out a square footage calculation might give you panicky flashbacks of being late for school! But don't worry, our guide will show you to calcu...

What is the Difference Between Nominal, Effective and APR Interest Rates?

Whether you're paying interest on a debt or earning interest on savings and investments, the nominal interest rate is the figure used before considering inflation. Nominal interest rates are the ones advertised on financial products, but once they are adjusted for inflation, these can go up or down ...

Photograph of feet wearing running shoes

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...

What is Financial Independence, Retire Early (FIRE)?
Financial Independence, Retire Early — or FIRE for short — is a financial plan followed by a growing number of committed savers. By putting aside the majority of their annual income, hardcore FIRE fans reject the typical pathway of working into old age...

How Long Would it Take to Walk Around the World?
Do you have a fully charged cell phone, some sturdy walking shoes and a really big bottle of water? Great. You'll be home in a mere matter of months, though exactly how long it takes to walk around the world will depend on a couple of factors...In which direction are you walking around the world?T...

How Much Does a Gallon of Water Weigh?
One US gallon of water weighs around 8.33 pounds or 3.78 kilograms at room temperature. The precise weight of water varies according to its level of density, which in turn depends on its storage temperature.You can learn more about the weight of water - and try out our water weight calculator and re...

How Many Cubic Feet is my Refrigerator?
Measuring the space inside your refrigerator might not be your first choice of activity for a Saturday afternoon, but it has its purposes.Perhaps you're planning to buy a week of meal-prep kits described as fitting in an 18 cubic foot fridge, or you're moving house and need to check that your fridge...

How to Calculate Net Income (With Examples)
Net income, also called net profit, is calculated by deducting an organisation's total expenses from their total revenue. It's basically the spare money left over at the end of a financial year, and a business might use it to invest, expand, save, or give out to shareholders...

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