This free forex margin calculator shows the exact dollar margin you need to open any forex or XAUUSD trade at your chosen leverage. Before every trade — especially on gold or with high leverage — check that your free margin can support the position without triggering a margin call. Works for MT4, MT5, and any broker.
Forex Margin Calculator is part of the free Aurex Trader calculator suite — 23 browser-based tools for gold (XAUUSD) and forex traders. Nothing is installed, no account is required, and every calculation runs locally in your browser.
Formula: Required Margin = (Lot Size × Contract Size × Price) ÷ Leverage Example: 0.10 lot XAUUSD at $2,000 on 1:500 leverage → (0.10 × 100 × 2,000) ÷ 500 = $4 margin.
Margin is the collateral your broker locks up to keep a leveraged position open. On 1:100 leverage a $10,000 position needs $100 margin. Free margin (equity − used margin) is what protects you from a margin call.
At gold price $2,000 on 1:500 leverage: (1 × 100 × 2,000) ÷ 500 = $400 margin per lot. On 1:100 leverage it's $2,000 per lot. Higher leverage = smaller margin but same real risk.
Your broker triggers a margin call (usually below 100% margin level) and starts closing positions at stop-out level (usually 50%). Always keep free margin at 3–5× your worst-case drawdown to survive normal volatility.
No — leverage only changes the margin requirement, not the dollar risk of the trade. Your actual risk is stop-loss distance × pip value × lot size, regardless of whether you're on 1:30 or 1:1000.