Position size calculator — never guess your risk again
Enter your account size, how much you're willing to risk, your entry and your stop. Get the exact number of shares or contracts, the dollars you're risking, and your R-multiple profit targets. Runs entirely in your browser — nothing is sent anywhere.
Your trade
Position
Profit targets (R-multiples)
| Target | Price | Profit |
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Sized it? Now find out if you followed the plan
Position sizing only works if you stick to it. Log the trade you just sized in a free note500 account — it tracks your real risk per trade, your R-multiples on exits, and flags when you're sizing up after a loss (the tilt that quietly wrecks accounts).
Start your free journal →This calculator is a planning aid, not financial advice, and makes no allowance for slippage, commissions, gaps or assignment. Everything is computed in your browser; no inputs are stored or transmitted. Confirm contract multipliers with your broker — futures point values and option multipliers vary by product.