* The dollar exchange rate on the currency exchange against the euro, ruble, etc.. currencies - this is the most recent data and changes every second on weekdays. This course is also used in determining the issue Central Bank rate. Usually the time is indicated - point of sale in the market. In a few seconds, the course can jump and return, so the course differs slightly on different sources.. The difference between buying and selling on the stock exchange is small, so often only the average value between buying and selling or the rate of the last transaction is indicated.. Suitable for "private traders", merchants, and it is this course that is more often laid down in currency converters. Most likely this is the dollar rate you are interested in..
** Exchange rate to the ruble of the Central Bank – official exchange rate of the dollar, euro to ruble. Issuance of the Central Bank does not always correspond to a market transaction and is used for special purposes mainly by financial state institutions (state reporting, accounting and bookkeeping) and etc. Most often indicated in informers on websites, but it rather reflects the rate of yesterday. Hence the concept - "dollar exchange rate for tomorrow". More precisely this - the dollar exchange rate on the next working day, which becomes known "today" after 11 in Moscow. Do not use the exchange rate of the Central Bank if you do not know exactly what it is..
*** Euro exchange rate on the currency exchange against the dollar, ruble, etc.. currencies - these are the freshest courses, constantly changing many times a minute as a result of trading on weekdays. Usually the time of the course is indicated. Guide for exchange offices, for private transactions with currency, merchants. This course is also laid down in currency calculators. Most often this euro rate - what you need. Difference between buying and selling (bid и ask) on the currency exchange is very small (usd / eur - less 0,001 $), therefore, often only the average value between buy and sell or the rate of the last transaction is indicated.
See also descriptions of dollar rates here:
**** Forecast for exchange rates - analysts assumptions about the dynamics of the dollar, euro, etc.. currencies. It is important to pay attention not only to where the exchange rate will be, but also when it will be predicted. Forecasts, news, studying the dynamics of exchange rates on charts allow you to make good money on the currency exchange, but this is associated with risk. Currency is traded via the Internet most often at brokers, forex dealing centers. It is enough to have a small amount - 100 - 1000 dollars.
