May 3, 2010
Updated • Jun 5, 2012

Math wizards take note. Chromey Calculator is an extension for the Google Chrome web browser that offers access to most of Wolfram|Alpha's and Google's mathematical calculations and functions.

The extension places one of those dreaded icons in the Google Chrome header that opens a popup window when clicked on.

Here it is then possible to perform calculations and conversions easily. Supported among others are for instance:

• Mixed unit calculations -- 2 mi + 4 km + 3 light-years in feet
• Unit conversion -- 1/4 cup in tablespoons
• Currency conversion -- 56 dollars in euros
• Hex, octal, binary -- 4 + 0xAF + 0o71 + 0b10 in hex
• Mathematical functions -- tan(pi/4), log(10), sqrt(2), etc.
• Mathematical and physical constants -- pi, e, h, c, etc.
• Solve equations -- solve(2 x^2 - 1 = 0)
• Derivatives and integrals
• Vector calculations

Chromey Calculator adds three core features to the power of the two calculators:

• Persistent printer tape style history - The extension displays the most recent calculation in its interface.
• Persistent links to original source of each result
• Persistent user variables - User variables can be created with @chars=

Quick Tips
* Last result can be accessed using the "@" variable.
* Create your own user variables -- @abc_123 = 42
* Store an unevaluated expression -- @x := 10 meters
* Use up/down arrow keys to access input history.
* Click on any result to insert it into the input area.
* Ctrl+Click or Cmd+Click (OS X) on any result to copy to clipboard.
* Click the little arrow at the upper right to pop out to new window.
* Hover over the the empty space to the left of any result to reveal a
"G" or "W" link. Click the link to see the original source of a result in

Chrome users who install the extension should take a closer look at the Google Calculator and Wolfram|Alpha examples.

Update:

If you need to do a quick calculation sometimes the easiest way to do that is to fire up your favorite web browser, Duck Duck Go for instance, and have the search engine do the calculations for you. Depending on the search engine, you can use it for more than just basic arithmetic calculations. Some support advanced math, unit conversions, provide you with information about constants or facts.

While that is pretty useful in itself, it lacks some of the advanced options that some users might want to take advantage of. A history feature comes to mind for instance that is displaying past calculations and information on the screen that may be important for calculations that take more than one step to complete. The visual representation of what you enter and the results may also not be that suitable or recognizable on the search engine's website.