Instead of offering fixed trade sizes (lots), the fxTrade platform is designed so traders may place trades from as small as 1 unit of currency. Thus, OANDA does not differentiate between standard, mini or micro accounts. One unit is equal to one of the base currency in a currency pair.
For example, one unit of USD/CHF is equal to one dollar and one unit of EUR/USD is equal to one Euro. Using units means you are not required to round your position size to a lot, mini lot, or micro lot.
If you are accustomed to trading in lots, the relationships are as follows:
1 standard lot = 100,000 units
1 mini lot = 10,000 units
1 micro lot = 1,000 units.
Unlike fxTrade, the MT4 platform does trade in lots.
Therefore when entering trades on MT4, a standard lot is 1, a mini lot is 0.1, and a micro lot is 0.01