A set of useful calculators for individual measurement, calculation and conversion purposes. These are divided into sections for math, health and others.
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.
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.
Use this pregnancy calculator to estimate your due date, your remaining length of pregnancy, your probability of giving birth on certain dates and how big your baby currently is.
Work out your waist-to-hip ratio (WHR) with this calculator tool. Your WHR number can help you determine which body shape category you fit into and suggest whether you might be in a low, medium or high risk health category.
Use this calculator to convert a decimal number to a fraction. You can also convert numbers with repeating decimals.
Use this calculator to convert a decimal number to its corresponding hex value and learn how to convert them manually.
Use this calculator to add, subtract, multiply or divide fractions. Full explanation and formulae are also provided to assist you with your calculations.
Use this calculator to convert a hex value to a decimal and learn how to convert them manually.
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.
Use this age calculator to work out how old you are in years, months, weeks, days, hours and seconds. In addition, this calculator will also tell you the day on which you were born.
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.
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.
Use this calculator to work out the cubic yardage of an area for materials such as concrete, sand, asphalt, compost, mulch or topsoil.
Use these calculators to add minutes, hours, days, months, and years on to a specific date or do a countdown to a specific date.
Calculate the exact number of hours, days and months between two dates, using this calculator. Find out how old you are in days.
Use the square footage calculator tool to work out an area of square feet for flooring, landscaping, carpets, tiling and more.
Find out how much money and CO2 you can save by switching your regular light bulbs to LED light bulbs.
Use this calculator to work out the amount of mulch you might require to cover an area of ground at a specified depth. Gives results in cubic yards, cubic feet and cubic m, plus mulch bag sizes.
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.
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.
The square footage calculator has recently been featured in Jasmine Directory.
Please do feel free to contact me with your comments on my calculators, including any suggestions for possible future development.
From abacus to iPad, learn how the calculator came about and developed through the ages. Read our featured article.