Perhaps the most well-established currency converter site around is XE. XE focuses solely on currency conversion, handling a wide range of currencies (aprox 150).

XE has a few features I like, including:

• One-click reversal – if you have entered 25 usd in eur, for example, there is a button to reverse the currencies and calculate 25 eur in usd. It is especially useful when you just want to see the actual currency rate and it’s inverse. You just enter, e.g. 1 usd in eur, then hit the inverse button to get 1 eur in usd.
• Exchange rate graph – for comparisons between currencies, XE can draw a graph of the exchange rate history. This is especially useful when putting in oversees expenses, as you can use it to locate the time the exchange rate is most favourable to you, and quote that rate on your oversees expense claim.
• A data feed (but it ain’t free) – currently Calcatraz uses a range of free data sources to provide exchange rates for all the major (and many minor) currencies. XE’s premium data feed also provides rates for a range of more obscure currencies. As Calcatraz continues to grow I will probably look into adding XE’s data feed to it’s sources, enabling us to better serve queries about lesser known currencies.

Latest Currency News from XE Converter site