Position Sizing Calculator
One of the most important questions in investing — how many shares or contracts should I buy? Enter your account size and risk tolerance and find out exactly.
Enter your trade details
Fill in the fields below then click Calculate.
How to use this calculator
- Enter your total account size — the total value of your trading account
- Set your risk per trade — the percentage of your account you are willing to lose on this one trade. Most experienced investors use 1–3%
- Enter the stock price you plan to buy at
- Enter your stop loss price — the price at which you would exit the trade to cut your loss
- Click Calculate to see how many shares and contracts to buy
Your position size
Results appear here after you click Calculate.
Trade breakdown
Position risk assessment
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Try full access — $0.99 for 14 daysDisclaimer: This calculator is provided for educational and informational purposes only and does not constitute investment advice or a recommendation to buy or sell any security. Position sizing results are estimates based on the figures you enter. Actual results will vary based on execution price, slippage, commissions, and market conditions. Stop loss orders do not guarantee execution at the specified price. Options trading involves substantial risk and is not suitable for all investors. Always do your own research or consult a licensed financial advisor before making investment decisions. IncomeTrader.com is not responsible for any trading or investment decisions made based on this tool.