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Enter your account balance, risk %, and stop loss to get the exact lot size for any trade — Forex, Gold, Indices, or Crypto.
Multi-Asset Protocol
Recommended Position
Standard Lots
R:R Ratio
1:1.00
Total Risk
$500.00
Position sizing determines how many lots to trade so that a losing trade costs exactly your planned risk — no more. Every professional trader uses a position size calculator before every entry.
Decide what percentage of your account you will risk per trade. Professional traders use 0.5%–1%. On a $10,000 account at 1% risk, your maximum loss per trade is $100.
Place your stop loss at a level that truly invalidates your setup — outside normal market noise. Measure the distance between entry and stop in pips or points.
Divide your dollar risk by the stop loss distance multiplied by the pip value for your instrument. The result is your lot size in standard lots.
Risk Amount ($) = Account Balance × (Risk % ÷ 100)
Pip Distance = |Entry Price − Stop Loss| ÷ Pip Size
Lot Size = Risk Amount ÷ (Pip Distance × Pip Value per Lot)
| Account Balance | $10,000 |
| Risk Percentage | 1% |
| Dollar Risk | $100 |
| Entry Price | 1.08500 |
| Stop Loss Price | 1.08200 |
| Stop Loss Distance | 30 pips |
| EUR/USD Pip Value | $10.00 per standard lot |
| Calculation | $100 ÷ (30 pips × $10.00) |
| Lot Size | 0.33 standard lots |
Most retail traders lose accounts not from bad entries but from incorrect position sizing. One oversized trade can erase weeks of consistent gains in a single session.
Professional forex traders — especially those funded through FTMO, MyForexFunds, The5ers, and similar prop firms — treat position sizing as the non-negotiable foundation of every trade. The lot size is what determines your actual dollar risk, regardless of what percentage you intend to risk.
For prop firm challenges with 4–5% daily loss limits and 8–10% max drawdown rules, a single over-sized losing trade can end your evaluation on day one. Risk 0.5%–1% per trade and protect the account at all costs.
Lot Size, Risk Management & Forex Calculator Questions
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