One of the most amazing (and often neglected) features of modern search engines is their ability to calculate formulas, solve math problems, and covert a broad range of units, currencies, and measurements. Here are some examples:
Here are some useful examples provided by Google:
WolframAlpha, a self-described “computational knowledge engine,” returns some truly amazing results when you enter a chemical formula (ex. “H2SO4″) , speed (ex. “45 mph”), temperature, or even musical notes (ex. “C Eb G C”).
Check it out!