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INTERACTIVE FINANCIAL MATH

Forex position size & risk calculator

Convert an account-risk budget and a stop-loss distance into an illustrative lot size. You supply the pip value for one standard lot in your account currency, so the tool does not assume a live conversion rate.

01 / EDIT YOUR SCENARIO∑
02 / YOUR RESULTS● Based on your inputs

Enter values to calculate.

✳ Illustration, not a forecastSee the formula ↘

How the calculation works

Risk budget = balance × risk percentage. Position in lots = risk budget ÷ (stop loss in pips × pip value of one lot). Units = lots × units per standard lot.

Worked example

A $10,000 account risking 1% has a $100 risk budget. With 40 pips to the stop and $10 per pip for one lot, the calculated position is 0.25 standard lots, or 25,000 currency units when one lot equals 100,000 units.

How to interpret the output

  • The risk budget is the theoretical loss at the stop level before slippage and fees.
  • You must verify contract size, pip value and minimum trade increments for the specific instrument.
  • A stop-loss does not guarantee execution at the stop price.

Important limitations and assumptions

  • This tool does not obtain live exchange rates; account-currency conversions are your responsibility.
  • Pip conventions differ for JPY pairs, metals and brokers.
  • Actual losses can exceed the chosen risk due to gaps, costs and execution.
Important: This is a transparent arithmetic illustration, not a trading forecast. Live spreads, execution, broker rules and investor protections can affect actual outcomes.

Primary reference and further reading

BabyPips — Position Size Calculator ↗