Position size calculator
Free tool · No login required
How many shares?
Let your stop-loss decide.
Set the most you are willing to lose on one trade. The calculator sizes the position from your entry and stop-loss, then adds the charges.
Your result
166 shares
Risking about ₹4,980.00 if the stop-loss is hit.
If the stop-loss hits: …. If the target hits: ….
Before slippage and income tax. Charges use Zerodha’s retail rates for one buy and one sell on NSE. Stops can fill worse than the stop price in a fast market.Frequently asked questions
How do I calculate position size from a stop-loss?
Decide the most you will lose on one trade, for example 1% of capital. Divide that amount by the distance between your entry and your stop-loss. The result is the number of shares; it is capped by how many shares your capital can buy.
What percentage should I risk per trade?
Many traders risk between 0.5% and 2% of capital per trade so that a run of losses does not wipe out the account. The right number depends on your strategy and is your decision; this calculator only does the arithmetic.
Are charges included?
Yes. It estimates brokerage, STT, exchange fees, stamp duty and GST for one buy and one sell at your stop-loss and at your target, using Zerodha’s retail rates, so you see the loss and gain after charges.
Can the loss be bigger than my risk amount?
Yes. In a fast market or a gap, a stop-loss order can fill worse than the stop price, and charges add to the loss. Treat the risk amount as a plan, not a guarantee.
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