Forex calculator

Position Size Calculator

How many lots to trade so a stop loss risks only what you choose.

Position size calculator

Instant calc

PairAccount currencyPrice (enter your live quote)Account balanceRisk per trade (%)Stop loss (pips)

Prices are pre-filled with rough examples — replace them with your broker's live quote for accurate results.

Position size (rounded down)

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Exact size

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Stop distance (price)

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Amount at risk

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Units

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Pip value per standard lot

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Lots = (Account Balance × Risk %) ÷ (Stop Loss in Pips × Pip Value per Lot)

Full explanation with examples: Position sizing explained

Set your stop loss where your trade idea is proven wrong, then size the trade.
Check the "Stop distance" result: some brokers call $0.10 a gold pip, while this calculator uses 0.01.
Costs such as spread and slippage make the real loss slightly larger.
Many educators suggest risking 1–2% per trade.