www.oanda.com is a great currency exchange site to visit.
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.
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
Miami Currency Exchange located in Miami Intl Airport Ste B3 is a very reliable and good store that does currency exchange.
Several online sites offer currency conversion tools. If you plan on selling stuff over a site such as ebay or Amazon, they offer conversion help for the retailer.
There are many good online websites to reference current currency exchange rates. Some good places to go to include the following: XE, CNN Money and Oanda.
Google has a currency exchange rate calculator as well as xe, x-rates, and Go Currency. Alternatively there are currency exchange rate calculators located at malls where you can exchange one currency for another.
There are a few sites online to get a copy of the diabetic exchange diet. A good site to find it is www.essortment.com/diabetic-exchange-diet-26719.html
Inexpensive, simple online exchange-trades can be found at Forex Trading. You can also find them on marketwatch.com, moneymagpie.com and scotttrade.com
You should buy currency exchange from a well reputed bank. They offer good rates and usually have most of the popular currencies. Now days many banks also have an online option so you can check out the rates on the internet.
The exchange rate changes each day and sometimes by the hour. You can find the current exchange rate for the dollar to the pound or any other currency by looking online on a site that lists the rates for currency around the world. As I said the rate is only good for that day and it will change each day. World events and the price of gold effect the exchange rate.
Foreign exchange trading is the speculation and exchange of foreign currency according to the fluctuation in values. Trading is done via a foreign exchange broker. Currency is purchased at a good price, based on the expectation the value will rise against another currency.
Online currency trading is hit and miss. Just like anything else online you'll find good companies. You may have to pay to use a legitimate one or you may find a free but chances are free exchanges are a scam.