Free tool · F&O

F&O Position Size Calculator

Pick a lot count that respects your risk budget — not your hopes. Built for Indian F&O on Sensex, Nifty, BankNifty and FinNifty.

Max lots you can trade
5
@ ₹1,200/lot
Capital at risk
₹7,000
1% of capital
If premium goes to ₹0
₹6,000
Worst-case max loss
Exposure
0.9%
of total capital
Risk meterConservative · 3%
Recommendation
Conservative (50% of max)2 lots
Moderate (75% of max)3 lots
Aggressive (100% of max)5 lots

How position sizing works

The formula is Max lots = (Capital × Risk%) ÷ (Premium × Lot Size). The most common mistake Indian options traders make is sizing by "what looks affordable" instead of by their pre-defined risk per trade. Even a 1% risk rule on ₹7L capital means losing only ₹7,000 if the premium goes to zero — that's how you stay in the game long enough to compound.

Default Indian F&O lot sizes: Sensex 10, Nifty 25, BankNifty 15, FinNifty 40. SEBI updates these periodically.

Built by Indian traders, for Indian traders

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