Position size calculator
Translate a hypothetical risk budget and stop distance into a maximum linear exposure estimate.
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Risk budget ($)
Account capital is not the same as risk at the stop.
YOUR ASSUMPTIONS · NOT A FORECASTEnter your values to calculate
Notional estimate before venue margin and contract rounding
Planned quantity ≈ (capital × risk fraction) ÷ (|entry − stop| + estimated costs per unit)
This is a simplified linear contract estimate. An entry above a stop is used for the long-side example; invert the relationship for a short. It does not compute liquidation, margin tiers, inverse contracts, funding, or gap risk.
This resource is educational, not individualized financial advice. Calculator inputs stay in your browser. Check your venue's current contract, margin and fee documentation.