Yes, I know that your computer has a calculator built in, but that's not what this site is about. Have a browse through the Main Menu / Site-map and you'll soon see the difference.
This problem has been noted in the past, for example Prof. Harold Thimbleby describes at length the need for A new calculator and why it is necessary, though his conclusion misses a fundamental issue: the lack of validation of formulae that are entered. This is not a problem restricted to hand-held calculators either - an Excel 2007 Bug has been widely reported, and follows on from a sorting bug, a recalculation bug and many others.
Most of you will have an electronic calculator around somewhere, but I bet that there is at least one button on it that you have never used, and probably don't know what it is for. Maybe it is one of the expensive programmable types that let you do really complex calculations. But you need to know how to work it properly, and no-one ever has the time to do that when you just want a couple of answers. Even if you know everything about your calculator, then you still need to know the calculation - if you can find the right formula then it will be the wrong way round, and once you've worked that out you need to convert all of the units.
Whenever you need to do any calculation just come here and you will find the formula and the calculator together, integrated with unit conversions, so that you won't make mistakes, and with a record of your calculations too.
If you can't find the calculator that you are looking for, but you know the formula, then go to our Generic Calculator or the more powerful Universal Calculator, where you can plug in any formula you like. If you want to be able to do the calculation again, then why not let us know, and we'll create a calculator page just for you!
Generate an (almost) infinite number of items in any Simple Geometric Series using either one of two ways of defining the mathematical sequence. This can be used to demonstrate the ancient 'Grains of rice on a chessboard' fable, and many other applications.
The first utility function is now available: you can now generate a globally-unique ID (GUID) with a single click. This same function is used behind the scenes on this site, and others, to generate error codes that can be used not only to identify the exact error, but also the correct application - all too often I have found myself chasing issues in the wrong module or application due to confused users. This is not truly a calculator, but all programmers will find this useful in the long run.
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