[Official Wolfram|Alpha extension.]
Wolfram|Alpha is the world's definitive source for expert, computable knowledge across thousands of domains.
Finance and food. Math and medicine. Stocks and spacecraft. Wordplay and weather. Whatever you want to calculate or know about, get there faster with the Wolfram|Alpha Extension for Google Chrome.
You'll wonder how you got work done without it.
✓ Wolfram|Alpha Button – Access the Wolfram|Alpha query box with just one click. You can also right-click the Wolfram|Alpha icon to change extension options.
✓ Omnibox Shortcut – Transform Chrome's omnibox into a Wolfram|Alpha query field by typing an = sign followed by a space.
✓ Context Menu Shortcut – Highlight text to create queries through a context menu (right-click) entry.