How to use this calculator
- Enter trading capital, capital risk budget (%), entry price, stop price, additional loss allowance per unit.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Units=floor(risk budget/(absolute entry−stop distance+unit loss allowance)).
Assumptions and limitations
Stop execution is not guaranteed; gaps, liquidity, margin and portfolio correlation can increase loss.
Worked example
With trading capital = 10000, capital risk budget (%) = 1, entry price = 50, stop price = 48, additional loss allowance per unit = 0, risk budget is approximately 100.
What the result means
Size a position against a chosen stop-distance risk budget.
Common questions
How should I interpret risk budget?
Size a position against a chosen stop-distance risk budget.
What should I check before using this result?
Stop execution is not guaranteed; gaps, liquidity, margin and portfolio correlation can increase loss.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.