One can find a free currency exchange online system by going to various websites online and selecting the currency option. This will allow you to exchange the currency.
www.oanda.com is a great currency exchange site to visit.
You can find the US currency exchange rate online at http://finance.yahoo.com/currency-converter. Or you can also try this website http://www.exchangerate.com/.
Online you are sure to find a lot of information about foreign currency exchange. XE and OANDA are two very common foreign currency exchange calculators that can be used online.
You can find the current us currency exchange rate on x-rates.com.
One can find an online currency exchange from the website XE. On XE one can find live exchange rates, trading, tools, licensing, and apps. There is also a forum if one needs help.
A converter for foreign currency exchange trading can be found anywhere on the internet. There are lots of currency calculators you can buy online off of many electronic websites.
Here is an online currency exchange rate converter that also has some information about the rates: http://www.xe.com/ucc/ or you can check out http://www.x-rates.com/ for another good currency site.
Most coin collection shops will exchange currency.
One can find many information on rate of exchange from many foreign currency exchange websites, for example the 'UKtradeinfo' and 'Rates FX'. One may also consider using a online currency converter, such as 'X Rates'.
One can find money exchange rates on the following sources online; Cross Comm, Conversion Counts, destination's currency converter, and Clikz' average conversion rate.
There are loads of money exchange calculators available online. This is one I use and I find it great: http://www.moneyextra.com/rates/currency-converter.php
You could find these at your bank, at an online bank, through the currency center at Yahoo Finance, through Bloomberg, through Datastream, through WRDS, and through FT.