For determine the value of currency for each country, they use international standard regime type. Some country use Float, Fix type and more other types. To choose which have to use for each country, depend on some situation such economic fundamental, foreign exchange reserves, import and export value and others.

Many country usually use Float type for their currencies, so their value is floating if compare to base currency like US Dollar and Euro. Why choose US Dollar or Euro?, because for several time, this country have stable economic fundamental, that’s why many country use this currency for comparing their own.

The floating value for each currency makes opportunities to trade. We can see from exchange rate table to find out which is currency is in good situation to buy, usually we also have to looking more information about that country such politic and economic issue at that time, because these kind of issue are really effected to the currency floating value. International issue also can effected to currency exchange rate.

The exchange rate at country with stable situation, usually more stable or even become more cheaper if comparing with base currency, this is the good time to buy this currency. Next time if something happen either external or internal issue which make the rate become more expensive, this will be a good time to sell this currency to get profit from difference exchange rate.