Currency conversions are an important factor if you trade and keep a watch on international market and getting product in and out between different countries. Getting an accurate information about conversion is equally important and Google Finance is an excellent option and Currency Converter extension of Chrome uses it.
Supporting more than 65 currencies all you need to do is add various currencies which you used more often. Now Lets say you have a bill of 1200$ and you need to know if you have it in your bank account where local currency is INR, just type in 1200$ in dollar section and press tab, you will be able to find the exact number. Download Currency Converter