The following collection of useful free online calculators is provided to make day-to-day life that little bit easier. Whether buying new clothes and shoes online and checking the international shoe size or collar size, reviewing astrology, the weather or improving your cookery skills, the useful calculators is a great suite of good calculators designed for use online via your mobile phone, desktop or tablet. This makes the calculators ideal for use anywhere around the home, when out and about shopping or at work.