I find that many people spend more time using Google or other search engines to search for sites that have convertors. In most cases it's not necessary when Google already has a built-in converter! Here are a few keyword examples to enter in Google's search bar:
2 + 2 =
2 + 2 = 4
150 USD in CAD 150 U.S. dollars = 172.034921 Canadian dollars
155 bar in psi 155 bar = 2 248.08493 pounds per square inch
All FireFox web browsers have a Google search bar embedded in the upper right side of the window so this is a snap.
Torque or HP conversions (
note: case & keyword sensitive):
1 N m in ft lb 1 (N m) = 0.737562149 ft lb
1 HP in Kw 1 HP = 0.745699872 kilowatts
Some other units like PSI and Bar are not case-sensitive. If you're unable to get the conversion you wanted in Google then try searching for a different conversion website.
More info on Google's calculator & currency converter can be found here:
http://www.google.com/help/features.html#calculator Thanks fspGTD for the tips!