Forex Position Size Calculator — Exact Lot Size from Risk % & Stop Loss Pips
Calculate position size in lots for forex trades. Enter account balance, risk %, stop loss in pips, and see standard/mini/micro lot sizes.
Forex Position Size Calculator
💡 Why Use This Forex Position Size Calculator?
Forex lot sizes are confusing for new traders — this calculator converts your risk percentage and pip stop loss directly into the exact standard, mini, or micro lot size to trade. Works for all major and minor pairs in any account currency.
Pro Tip: Use micro lots (0.01) when starting out — they let you experience real-money discipline while keeping maximum loss under $20, allowing you to learn position sizing without catastrophic mistakes.
Frequently Asked Questions
How do I calculate forex lot size from account balance and risk?›
Lot Size = (Account Balance × Risk %) ÷ (Stop Loss Pips × Pip Value). For $10,000 account, 1% risk, 30 pip stop on EUR/USD: ($10,000 × 0.01) ÷ (30 × $10) = 0.33 lots. Enter your values for instant calculation.
What lot size should a beginner use in forex?›
Start with micro lots (0.01). At $10,000 account balance, 1% risk = $100 max loss. On a 50-pip stop, that's 0.2 micro lots. Never risk more than 2% per trade until you have 200+ trades of documented performance.
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About This Tool
Calculate forex position size in lots