Free tool
Calculate accurate lot sizes and risk parameters for Forex, Gold, Indices, and Crypto before executing trades on your prop firm accounts.
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Account currency
Instrument
1.00 lot = 100,000 units · pip 0.0001
EURUSD · Euro / US Dollar
Lot size
0.50
Max leverage 1:30
Notional $54,250.00 uses reference price 1.085.
Sizing based on standard broker contract specs. Always verify lot step rules with your specific prop firm platform.
Prop firm accounts are capped by a daily loss limit and a maximum drawdown, so the cash at risk matters more than the direction of the trade. Lot size turns your stop into a dollar amount. Keeping risk near 0.25% to 1% of the balance leaves room for a normal losing streak without spending the daily drawdown. Oversized lots also raise margin, and that extra leverage can breach a drawdown rule even when the trade idea is sound.
XAUUSD uses a standard lot of 100 ounces. One pip is a 0.10 price change, so a $1 move in gold is 10 pips and about $100 per standard lot. US30 and US100 are sized in points rather than forex pips. On a standard contract, one point is about $1 per lot, so the lot size is the cash you are willing to lose divided by the stop distance in points.
Lot Size = Risk Amount ($) / (Stop Loss Distance * Pip/Point Value). Risk amount is the account balance multiplied by the risk percent. Stop loss distance is the number of pips or points from entry to the stop. Pip or point value is the cash value of one pip or one point on a single standard lot for that instrument.
