Use this position size estimate with your balance, risk percentage, entry, stop and the instrument's dollar loss per unit per 1.00 price move. It does not automatically convert forex lots or CFDs; contract size, tick value and account currency must match your broker.
Position Size 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: Estimated units = Risk Amount ÷ (Price Distance × Dollar loss per unit per 1.00 price move) Example: $10,000 balance × 1% risk = $100 risk. With a 10.00 price distance and a confirmed $1 loss per unit per 1.00 price move, estimated units = $100 ÷ (10 × $1) = 10 units. Set the unit value for the instrument; this is not a universal FX-lot conversion.
A position size calculator tells you exactly how many units, lots, or contracts to trade so that if your stop loss is hit, you only lose a pre-defined percentage of your account. It removes the guesswork from risk management.
Most professional traders risk between 0.5% and 2% of their account per trade. New traders should stay closer to 0.5%–1% while building consistency. Risking more than 2% per trade dramatically increases drawdown risk during a normal losing streak.
Yes — enter your gold entry and stop-loss prices normally. For a gold-specific lot-size output (in MT5 lots), use our XAUUSD Lot Size Calculator instead.
Position size is expressed in units of the instrument; lot size is a broker-specific standardised unit (1 standard lot = 100,000 units of the base currency for FX pairs). Both control your exposure — this calculator gives units; our Lot Size Calculator converts to lots.
Position sizing is what turns a good strategy into a survivable one. Even a 60%-win-rate system can blow an account if position sizes are too big during an inevitable losing streak. Fixed-percent risk sizing keeps losses recoverable.