If the dollar is in the post-currency Margin = current price × contract size × margin ratio × number of lots. Take GBP/USD as an example. The contract size is 100,000, the margin ratio is 0.5% and the current price is 1.25000. The margin required for trading 1 lot = 1.25*100,000*0.5%*1=625 USD (Note: the required margin may fluctuate with market prices, please refer to the current MT5 data). If the dollar is in the former currency Margin = current price × contract size × margin ratio × transaction lot / USD/JPY exchange rate. Take EUR/JPY as an example, the contract size is is 100,000, and the margin ratio is 0.5%. Assuming the current price is 128.50 and the exchange rate of the US dollar against the Japanese yen is 133.00. The margin required to trade 1 lot is 128.5*100000*0.5%*1. /133=483 USD (Note: the required margin may fluctuate with market prices, please refer to the current MT5 data).