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Position Size Calculator

Estimate position size based on account value, risk and stop-loss distance.

Enter your account value, risk per trade, entry price and stop-loss price to estimate a position size based on the amount of capital you are willing to risk.

Enter your values to estimate position size.

How position sizing works

Position sizing estimates how many units of an asset can be taken while limiting the potential loss between the entry price and stop-loss price to a chosen percentage of the account value.

For example, with a 10,000 account and 1% risk per trade, the risk budget is 100. If the entry price is 100 and the stop-loss price is 95, the risk per unit is 5. Dividing 100 by 5 produces an estimated position size of 20 units.

Position size formula

Position Size=Account Value×(Risk %100)|Entry Price−Stop-Loss Price|\text{Position Size}= \frac{\text{Account Value}\times\left(\frac{\text{Risk \%}}{100}\right)} {\left|\text{Entry Price}-\text{Stop-Loss Price}\right|}

The numerator represents the amount of account capital allocated to risk, while the denominator represents the price risk per unit.

This calculator is provided for educational and research purposes only and does not constitute investment advice.