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Position Size Calculator

Risk Management Tool

Learn how to calculate optimal position sizes based on your risk tolerance and account size.

Educational Tool: This calculator demonstrates position sizing concepts for learning purposes. Results are educational examples and should not be used as trading advice. Always verify calculations and risk parameters with your broker.

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Calculate Position Size

Your total trading account balance

Percentage of account you're willing to risk per trade (typically 1-2%)

Distance from entry to stop-loss in pips

Value per pip for 1 standard lot (use Pip Calculator to find this)

Understanding Position Sizing

Position sizing is one of the most important concepts in risk management. It determines how many lots you should trade based on your account size, risk tolerance, and stop-loss distance.

The 2% Rule

Many traders follow the "2% rule" - never risk more than 2% of your account on a single trade. This helps preserve capital during losing streaks. With proper position sizing, you can survive 50 consecutive losses before depleting your account.

Position Sizing Formula

Position Size (lots) = Risk Amount ÷ (Stop-Loss in pips × Pip Value)

Risk Amount = Account Size × Risk Percentage

Example Calculation

  • Account Size: $10,000
  • Risk: 2% = $200
  • Stop-Loss: 50 pips
  • Pip Value: $10 per pip (1 standard lot)
  • Position Size: $200 ÷ (50 × $10) = 0.4 lots

Key Principles

  • Wider stop-loss = smaller position size to maintain same risk
  • Tighter stop-loss = larger position size possible with same risk
  • Never exceed your risk tolerance regardless of setup quality
  • Adjust for correlation if trading multiple pairs simultaneously

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Risk Warning

Proper position sizing does not guarantee profits or prevent losses. It's a risk management tool to help preserve capital. Always use stop-losses and never risk more than you can afford to lose.

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