Position sizing is the one part of trading you fully control. Enter your account size, how much you're willing to risk, and where your stop sits — this works out the exact quantity that keeps a losing trade inside your plan.
Total capital you trade with.
Most professionals risk 0.5%–2% of capital on any single trade.
Optional — used to calculate your risk-to-reward ratio.
Fill in your account size, risk percentage, entry and stop loss to see the position size that keeps your loss within plan.
Your position size is decided by two things: the rupee amount you're willing to lose, and the distance between your entry and your stop loss. Divide the first by the second and you have your quantity.
Quantity = (Account × Risk%) ÷ |Entry − Stop|
Notice what this means in practice: a wider stop does not mean more risk. It means a smaller position. The rupee risk stays exactly where you set it.
Risking 1% per trade means ten losses in a row costs you roughly 10% of capital — painful, but survivable, and recoverable. Risking 10% per trade means the same streak wipes out about two-thirds of your account, which is not.
Losing streaks are normal even with a genuine edge. Position sizing is what decides whether you are still trading when your edge starts working again.
Learn how professionals size positions, place stops and protect capital before they learn a single entry model.
This calculator is provided for educational purposes only. It does not account for brokerage, taxes, slippage, lot sizes or margin requirements, and nothing here is investment advice.
