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Wealth.cat

    Position size calculator (lots)

    Work out how many lots to trade from your balance, risk percentage and stop loss — for forex, gold and indices.

    Position size
    0.4 lots
    Amount at risk
    $100.00
    Units
    40,000
    Pip value
    $10.00 per lot

    Results are estimates. Brokers and prop firms calculate prices and limits in their own way — check their rules.
    How to use it: a short screen recording

    10 s, no sound. Recorded on October 12, 2026 with the calculator above; numbers are examples.

    How it works

    Position size = amount at risk ÷ (stop loss in pips × pip value per lot). Risking 1% of a $10,000 account with a 25-pip stop on EUR/USD means $100 ÷ (25 × $10) = 0.40 lots.

    The result is rounded down to 0.01 lots so you never risk more than you planned.

    Updated October 6, 2026