SmartifyTrade — Free Tools
Trading Calculators
Free tools for structured risk management. Calculate position size, risk:reward, drawdown recovery, prop firm targets, and options lot sizing — all in one place.
⚠️ Educational tools only — not financial advice. Always apply your own judgment.
Risk Management
Position Size Calculator
Calculate the maximum number of lots or contracts to trade, based on your capital and the maximum % you're willing to risk on one trade.
Trade Planning
Risk : Reward Calculator
Enter your entry, stop loss, and take profit prices to instantly calculate your Risk:Reward ratio. Aim for 1:2 or better.
✅ Good RR — reward outweighs risk
Account Health
Drawdown Recovery Calculator
See how much gain you need just to break even after a drawdown. A 50% loss requires 100% gain to recover — this is why capital protection is everything.
If your account drops by 20%, how much gain do you need just to break even?
🟡 Moderate drawdown — protect your capital now
Prop Trading
Prop Firm Target Tracker
Track your daily required profit to hit the prop firm challenge target before the deadline. Enter your account details and current P&L.
Options Buying
Options Lot Size Calculator
Delta-adjusted lot sizing for options buyers. Uses capital, risk %, delta, and SL to calculate the maximum contracts you should buy.
Nifty: 65 · BankNifty: 30 · FinNifty: 60 · MidcpNifty: 120 units per lot (NSE, from the January 2026 series)
Do not know your delta? Compute it below from the strike, days to expiry and volatility.
Options Analysis
Options Payoff & Greeks
Price an option, read its greeks, and see the payoff at expiry with exact breakevens. Nothing here reads a market feed - every number comes from what you type, so you can check each one by hand.
Model price and greeks
Implied volatility from your premium
Put that number in the volatility field above and the model price becomes your premium. That is what “implied” means — it is the volatility the price is assuming, not a forecast.
Payoff at expiry — 1 lot x 65 units
What this is, and what it is not. Every number above is computed from what you typed — this page reads no market data at all, which is also why nothing here is delayed or licensed. The price and greeks come from Black-Scholes (or Black-76 on a futures quote), which assumes one flat volatility for every strike. Real option chains have a smile, so a live premium will differ from the model — that gap is information, not an error. Margin for a short option is not shown anywhere on this page: it needs the exchange's daily SPAN file, and a rule-of-thumb multiplier would be the most dangerous number here. Use your broker's margin calculator.
Index options on NIFTY, BANKNIFTY and FINNIFTY are European and cash-settled, which is exactly what this model prices. Single-stock options on NSE are European too, but they are PHYSICALLY settled — an in-the-money position is delivered as shares, not as cash, so the real outcome carries delivery margins and settlement obligations this cash-settled payoff does not show.
These calculators are for educational purposes only. All values are estimates. Real trading involves additional factors including slippage, brokerage charges, and market conditions.