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Position Size Calculator

Calculate precise position sizes based on your account balance, risk tolerance, and stop-loss levels.

Risk & Trade Setup

Define your maximum acceptable loss to determine the appropriate position size.

Trade Direction

Direction is used to validate stop placement and interpret risk.

Account & Risk Settings

$
Total capital available for trading
0.1% 5%
Percentage of account to risk on this trade
%
Limits position value even if stop is tight

Trade Parameters

$
$
%
Stop distance as percentage from entry
$
Total estimated fees for this trade
¢
Estimated slippage cost per share

Position Summary

Enter your risk parameters and trade details to calculate your optimal position size.

Recommended Position Size
-
shares/units
Capped by exposure limit
Total Position Value
-
Dollar Risk
-
Allocation
-
Stop Distance
-

Risk Guardrails

Stop Validation
OK
Exposure Cap
Not Triggered
Risk Budget Used
-
This position risks $0, or 0% of your account. If the stop loss is reached, your maximum loss is predefined and controlled.
Account at Risk: -
Account Allocated: -
Remaining Capital: -
Account Balance $0
Risk
Position
Remaining
AI Coach unavailable. Your calculation is still valid.

What-if Adjustments

Updated just now

Calculation Formula

Position Size = (Account Balance × Risk %) ÷ (Entry Price - Stop Loss Price)

Why Position Sizing Matters

  • Consistency: Use the same risk percentage across all trades to maintain discipline
  • Risk first: Always define your risk before calculating position size
  • Adapt to volatility: Tighter stops naturally result in larger positions, while wider stops reduce exposure
Disclaimer: This tool is for educational purposes only and does not constitute investment advice. Always conduct your own research and consider consulting with a financial advisor before making trading decisions.