Position Size Calculator
Calculate the ideal position size for NSE Equity, Nifty/Bank Nifty F&O, and MCX Commodity. Prevent over-leveraging — know your exact risk before placing the trade.
1Account & Risk
2Trade Setup
Result
What is position sizing?
Position sizing is deciding how many shares, lots, or contracts to buy or sell on a single trade, based on how much capital you are willing to risk. It is the single most important risk management decision a trader makes.
Most professional traders risk between 0.5%–2% of their total account per trade. This ensures that even a streak of 10 losses only reduces the account by 5%–20%, keeping the trader in the game long enough for their edge to play out.
How to use this calculator for Nifty F&O
- 1. Enter your total trading capital
- 2. Set risk % (1% is recommended for most traders)
- 3. Select Nifty Futures or Bank Nifty Futures
- 4. Enter your planned entry price and stop-loss level
- 5. The calculator shows you exactly how many lots to trade
What is R-Multiple?
R-Multiple (or R:R ratio) is the ratio of your potential profit to your potential loss. A 2R trade means your target is 2× the distance of your stop-loss. Professional traders generally look for setups with a minimum 2R before entering.
If your strategy has a 45% win rate and an average R of 2.5, your expectancy is positive: (0.45 × 2.5) − (0.55 × 1) = +0.575R per trade.
Lot sizes used in this calculator
Lot sizes as per SEBI/NSE guidelines. Verify before trading — SEBI revises these periodically.