Lot-size calculator

Size every position to a fixed percentage of your account. Free — no account needed.

Position size

Account balance

Risk per trade (%)

Stop-loss (pips)

Instrument

Result

Amount at risk$100.00

Position size0.50 lots

Units50,000

Pip value used$10.00 / lot

Lots = (Balance × Risk%) ÷ (Stop pips × Pip value). Verify the pip value for your broker and instrument — JPY pairs and metals vary with price. Educational tool, not financial advice.