Calculating the Size of a Currency (Forex) Market Trade

The formulae for calculating the size of a futures market trade and calculating the size of a stock market trade are the most straightforward of the trade size calculations.

The formulae for calculating the size of a currency (i.e. forex) market trade provides the amount of currency that can (or should) be traded for a trade on a currency market (i.e. a forex market), and is slightly more complicated.