How it works
Position size connects a loss budget to the distance between entry and stop. Exposure is the full value of the position; it is not the amount planned to be lost at the stop.
The formula
Keep currency, units and time periods consistent. Percentage inputs use percentage points (enter 5 for 5%). Results are rounded only for display; tiny nonzero values may use scientific notation. Undefined ratios are shown as unavailable.
A $10,000 account, 1% risk, $100 entry and $95 stop give a $100 budget, 20 units and $2,000 exposure.
Calculation method
A wider stop reduces compatible quantity when the loss budget stays unchanged. Contract multipliers convert a one-point move into currency per contract. Enter the instrument’s actual multiplier.
Interpretation
Quantities round down to the entered increment. If the minimum order exceeds the budget, no compatible order is displayed. Stop execution can differ from the trigger, so planned risk is not a guaranteed maximum loss.
Method and reference sources
Method and content checked 2026-09-20. These sources provide background, not endorsement or professional certification. The formula and limitations above define this calculator.
- CME Group — Calculating futures profit or lossContract size and price-movement context; verify your broker or exchange specification separately.
- Investor.gov — Understanding FeesInvestment fee and compounding context; enter the terms of your fund or account.
Frequently asked questions
Does the calculated risk cap guarantee my maximum loss?
No. It models execution at your stop and the entered contract terms. Gaps, slippage, commissions and unavailable liquidity can make realized loss larger.
What is a worked example for Position Size?
A $10,000 account, 1% risk, $100 entry and $95 stop give a $100 budget, 20 units and $2,000 exposure.