You can calculate the required margin by dividing the size of your position by 200 (which is the default leverage) or multiply by the percentage margin 0.5%.

Then transform the amount in US dollars based on current market exchange rates.

For example

• 1.0 Standard lot sell/buy EURUSD as 1.2450 requires $622.5 margin

Equation

((1lot * 100,000) * 1.2450) / 200 = 622.50

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• 0.5 Standard lot sell/buy AUDJPY at 100.55 with current AUDUSD bid rate 0.8490, requires $212.25 margin

Equation

((0.5 lot * 100,000) * 0.8490) / 200 = 121.25