This tool computes the margin required (in USD) when buying a specific number of units of a currency pair.

For Example: In order to trade 100,000 units of USD/JPY. Traditionally, trader needs 100,000 US dollars or we say 1:1 leverage (trading cash). However, with 100:1 leverage, currency trader is only required to deposit 1/100th of the amount needed, 1,000 US dollars