Position Risk and Sizing Calculator
Calculate position units from a chosen risk budget, stop distance, value per stop unit and estimated round-turn cost. The result rounds down to the permitted size step.
Position Risk Calculator
Given a dollar risk budget and stop distance, compute the maximum position size that fits within that budget. Value per stop unit, round-turn commission, and size step are instrument-specific — enter them directly.
This is a demonstration model. Results are illustrative and do not constitute financial advice, guarantees, or account decisions.
Formula
Risk per unit = stop distance × value per stop unit + estimated round-turn cost per unit. Position size = risk budget ÷ risk per unit, rounded down to the size step. Enter values in one account currency.
Worked example
A $100 risk budget, 20-pip stop, $10 pip value per lot and $7 round-turn commission per lot gives $207 modeled risk per lot. With a 0.01 lot step, the size is 0.48 lots and modeled loss is $99.36.
A stop can execute at a worse price. This calculation is not a guarantee that loss is capped at the budget and does not choose a suitable risk level for you.