calculation

Time is a funny thing, and while you probably know how old you are in years (at least, we hope so), have you ever stopped to think about exactly how many days, hours, minutes, or even seconds you've been alive? Age Calculator is an easy way to find out. We're honestly not sure why you'd need this program -- there are plenty of Web sites that let you perform the same calculations without downloading any software -- but it does indeed calculate your age in a variety of increments.

The program's interface is plain and straightforward, … Read more

The ideal pocket calculator would be compact yet capable, taking up little space but with an easy-to-use layout that maximizes efficiency. It should have not only basic functions but also optional scientific functions. The same criteria apply to desktop calculators. Jose Falcao's Mini Calculator is a free desktop calculator for Windows that generally meets those criteria. It's compact and efficient, with an attractive layout. You can use it as a basic calculator or add a panel of scientific functions with a click. It also has an optional tally strip feature. Minicalc is also portable freeware, making it a … Read more

Calculator is -- wait for it! -- a calculator. A desktop calculator. But we'll tell you that Calculator by Willy's Freeware isn't just a free desktop calculator, it's quite a nice one. Like the built-in Windows Calculator and most of the rest of the competition, it's designed to look and function like an old-style desktop calculator, the kind that sat on top of your desk and had real buttons you could push. Calculator has a few interesting twists, such as a new History Pane that functions like a tally roll on an adding machine, except … Read more

With energy costs perpetually rising, you don't have to be all that green to want to reduce your energy use and expenditures. Energy Cost Calculator from AB-Tools is freeware that calculates how much energy your appliances use, and how much it's costing you. It's easy to use, but you'll need to know your electric utility rates, usage habits, and appliance types for the program to calculate your energy costs. Energy Cost Calculator's database includes many examples, and you can add new ones, too.

Energy Cost Calculator's compact interface opened with an optional tool tip … Read more

Math expressions are well-formed, logical combinations of numbers and factors such as mathematical symbols and variables. A good example of a math expression is 2+2. Solving the problem creates an equation: 2+2=4. Calculator Prompter is a freeware math expression calculator. You can type or paste entire expressions, including brackets and operators. A built-in error correction system helps you solve problems. Calculator Prompter supports functions and constants, too. It can perform any calculation a desktop or handheld calculator can handle. It's fast, flexible, and very capable tool for math-savvy users.

Calculator Prompter's interface is unlike most … Read more

You may already know that the Windows 7 version of Calculator performs basic arithmetic, as well as scientific, programmer, and statistical calculations. What you may not know is that it can also calculate mortgage payments, fuel economy, perform unit conversions, and more.

Here are seven Windows 7 Calculator features you may not know about:

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1. Calculate mortgage payments No need to search online for a good mortgage calculator; you've got one built right into Windows. From Calculator, go to View > Worksheets > Mortgage. You can choose from monthly payment, down payment, purchase price, and term (in … Read more

Numbers for iOS works well for creating spreadsheets and organizing data while away from your desktop, with a multitude of useful tools and a smart interface design to make your spreadsheet work easier. On the iPhone the app works admirably, but the smaller screen size makes it a bit less easy to use than the iPad version.

The app comes with a Getting Started file that walks you through everything from basic spreadsheet use to more-complicated features using an intuitive tabbed interface. As you learn the various features, the Getting Started file directs you to try them on your own … Read more

When you purchase a new Mac it almost goes without saying that some sort of office productivity suite is required, and though, based on popularity, some might gravitate to Microsoft's Office, there are others available as well, such as OpenOffice, NeoOffice, some standalone word processors, and also Apple's iWork suite.

iWork's programs include Pages for word processing, Keynote for presentations, and a relatively unique approach to spreadsheets with its Numbers program, which if you are used to Excel, offers some similar ways to manage data, albeit with some uniquenesses.

Unlike most spreadsheet programs that offer a seemingly … Read more

There's no shortage of math-related educational freeware (or, as they say in Britain and many other places, "maths") and U.K.-based Eptsoft would clearly like your local council to choose its product, Accounting Maths and Computing for Business Studies V10, for your schools. To that end, it offers an ad-supported, reduced-feature freeware version of this package of educational and financial tools. However, it also has what may well be the most persistent and annoying full-screen ads we've ever encountered, and it disables full-screen features so you can't possibly miss the constantly refreshing, ad-splashed background. … Read more