Position Size Calculator (1% Rule)
Enter your capital, entry price and stop loss. The calculator gives you the exact quantity that keeps your risk at 1% of capital — the discipline that keeps trading accounts alive.
Fill in entry and stop-loss to see your position size.
How the calculation works
The formula: Quantity = (Capital × Risk%) ÷ |Entry − Stop|. Your stop distance comes from the chart's structure; your risk amount comes from your capital. Quantity is the output, never the starting point. If the quantity's position value exceeds what your broker allows, trade the smaller number — never widen the stop to "fit."
The cost estimate uses 0.12% of round-trip turnover — a realistic all-in figure for NSE intraday (brokerage, STT, exchange charges, GST, stamp duty and typical slippage). It's the same cost assumption Artha's public track record deducts from every paper trade.
New to the concepts? Read the 1% rule explained and where to place stop losses on breakout trades.
Practice with virtual money, not savings
Artha's paper-trading simulator enforces position sizing and stop losses on live NSE data — and its methodology publishes every trade it takes, losses included.
See the public track recordEducational tool · not investment advice · Artha is not SEBI-registered