Free trading tools for option traders
Calculators that run entirely in your browser. You type the numbers; nothing is sent anywhere and no live market data is used. Results are estimates for planning and education, not advice.
Stock research checklist
A rule-based scorecard for fundamentals, management, valuation, technical structure and risk. You type the figures from filings and your chart; the page explains each rule and prepares a prompt and a printable summary. No live data.
Option payoff & breakeven at expiry
Add up to four legs (buy or sell, CE or PE) to see the profit or loss at expiry, the breakeven points, and the maximum profit and loss. Premiums are what you pay or receive per unit.
P&L at expiry, before charges and slippage. Selling options needs margin and can lose far more than the premium received.
Position size calculator
How many lots you can take so that hitting your stop loses no more than the share of capital you choose.
Risk–reward & target levels
Set an entry and stop, and see the target premiums at 1R, 1.5R, 2R and 3R, plus the win rate you would need to break even at each one.
F&O charges & net P&L
Estimate brokerage, STT, exchange charges, SEBI fee, stamp duty and GST on one option round trip, and the premium move you need just to cover them.
Rates used (edit if your broker differs)
Defaults: STT 0.15% of sell premium (from 1 April 2026), NSE option transaction charge 0.03553% of premium. The BSE default is 0.0325%; BSE has revised this charge before, so check your contract note. Rates change; your broker's contract note is final.
Pivot points & CPR
Enter the previous session's high, low and close (from your charting app) to get classic pivot levels and the Central Pivot Range many intraday traders watch.
Index expiry calendar
Upcoming weekly expiry dates by the current exchange schedule: NIFTY on Tuesdays and SENSEX on Thursdays; the last one of each month is the monthly expiry. Days to expiry are counted from today (IST).
If an expiry day is an exchange holiday, the expiry usually moves to the previous trading day. This page does not know the holiday list, so check the NSE and BSE circulars before trading around expiry. The Today tab in the app marks expiry days for you.
Live tools in the app
These need live market data, so they run in the Android app and the members' area rather than on this public page.
OI Live
Strike-wise open interest, to see where option sellers are positioned through the session.
Check my trade
Test a trade you are planning against today's day type and the setup rules before you place it.
Day type & verdict
Trend, range or reversal from the first candles, with a Trade / Wait / No-trade verdict for the day.
EMA alerts
Moving-average alerts on your phone when price crosses the levels you follow.
Live P&L per lot
The live premium and per-lot P&L of every open call, with target, stop and exit-time alerts.
Results & P&L calendar
Every call that was sent, wins and losses, on a day-by-day calendar at one lot each.
About these calculators
They are simple models for education and planning. They ignore slippage, taxes on profit, margin rules and early exits, and they assume the numbers you enter are right. They are not a recommendation to trade. As per a SEBI study, 9 out of 10 individual traders in the equity F&O segment incurred net losses.