Handy Calculators

A set of useful calculators for individual measurement, calculation and conversion purposes. These are divided into sections for math, health and others.

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BMI Calculator

Use the metric and imperial BMI calculators to work out your body mass index (BMI). By calculating your body mass index, you can get an indication of whether your weight may be affecting your health.

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BMR Calculator

Would you like to know how many calories you burn on a daily basis? Use our metric and imperial BMR calculators to determine both your daily inactive calorie burn and your daily calorie burn based upon your activity level.

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Decimal to Fraction

Use this calculator to convert a decimal number to a fraction. You can also convert numbers with repeating decimals.

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Fractions Calculators

Use this calculator to add, subtract, multiply or divide fractions. Full explanation and formulae are also provided to assist you with your calculations.

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Percentage Calculator

Whether you need to calculate the percentage for a given statistic, want to see how much your assets have increased by or want to work out the tip for a restaurant bill, the percentage calculator is the tool for you.

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Birthday Calculator / Age Calculator

Discover what day you were born on and how long you've been alive in days, months and years. In addition, find out your star sign, your birthstone, and the celebrities that you share your birthday with.

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Cubic Feet Calculator

Use this tool to calculate the volume or capacity of an object or space using dimension measurements in either feet, inches or a combination of both.

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Days Between Dates

Calculate the exact number of days, months and years between two dates, using this calculator. Find out how old you are in days.

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Roman Numerals Converter

Use this converter to convert to and from roman numerals. Simply enter a whole numeric value between 1 and 3999 or a set of roman numerals to get your conversion.

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Scientific Calculator

Whether you're looking to solve problems in mathematics, physics and engineering or simply want to make simple calculations, this scientific calculator is the tool you need.

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Square Footage Calculator

Use the square footage calculator tool to work out an area of square feet for flooring, landscaping, carpets, tiling and more.

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Substance Converters

Alcohol, Asbestos, Coffee, Construction, Cooking, Metal, Oil, Petrol, Water, Wood , Gold

Please do feel free to contact me with your comments on my calculators, including any suggestions for possible future development.