NSE Option Price Calculator Option Price CalculatorWork out what an option should be worth before it expires. The calculator prices a contract from the NSE spot price and the implied volatility we already hold, then lays out strike by strike what you would make or lose and what that is as a percentage return — so a mid-cycle exit becomes a number rather than a guess.
| Moneyness | Strike ₹ | Today ₹ (LTP) | Premium % of Spot | Lot Cost ₹ | IV % | OI | Volume | Cycle End ₹ (est) | Change/Lot ₹ | Move % |
|---|---|---|---|---|---|---|---|---|---|---|
| Select a stock/index & expiry, then press Calculate to load live strikes. | ||||||||||
What an option price actually is
An option premium splits into two parts, and keeping them apart explains most of what a calculator shows you. Intrinsic value is what the contract would be worth if it expired right now — spot minus strike for a call, strike minus spot for a put, floored at zero. Everything above that is time value: what is being paid for the chance that the contract finishes better placed than it is today. Time value has to reach zero by expiry, and it does not get there evenly. It drains slowly while expiry is distant and quickly in the final sessions, and it is largest at the money, where the outcome is least settled.
That is why two contracts on the same stock, in the same expiry, can behave nothing alike. A deep in-the-money call is mostly intrinsic value and tracks the stock closely. A far out-of-the-money call is entirely time value and can lose all of it while the stock barely moves. The calculator prices every listed strike side by side so this spread is visible as a table rather than something you have to hold in your head.
Where the numbers come from
Pricing uses Black-Scholes, which applies directly here because NSE stock and index options are European — exercisable only at expiry, never before. It takes the spot price, the strike, the time left, the interest rate and a volatility, and returns a price. The volatility used is the implied volatility already stored against that contract; where the exchange file did not carry one, it is solved back out of the traded premium so that the model reproduces the price the market actually paid.
Every input is end-of-day data from NSE's own published files rather than a live feed. That makes the figures stable — the same query returns the same answer next month — and it means the tool is for studying contracts rather than quoting them during market hours. For live prices while the market is open, a broker terminal is the right place to look.
How to use the Option Price Calculator
- Choose symbol and expiryPick the NSE stock or index and the expiry cycle you are trading.
- Set your viewEnter the spot price you expect and the date you expect to be out by.
- Read the strike tableEvery strike is priced under that view, with the projected profit and percentage return side by side so you can see which strike actually pays for the move you expect.
Frequently asked questions
How does the option price calculator work?
It prices the contract from the NSE spot price and the implied volatility stored in our database, along with the time left to expiry. Change the spot you expect or the date you expect to exit, and every strike is repriced under that assumption.
Where does the implied volatility come from?
From our own stored copy of NSE data for that contract, rather than a typed-in guess. That is what makes the estimate specific to the strike you are actually looking at.
Can it tell me which strike to buy?
It shows what each strike would return under the view you enter, which is the information that decision needs. It is not advice, and the numbers are estimates — real fills depend on liquidity, volatility changing and the spread.
Why is my broker showing a different premium?
A theoretical price assumes the volatility and time inputs it is given. Live premiums also carry the bid-ask spread, demand at that strike and volatility that has moved since the stored figure. Treat the calculator as an estimate of fair value, not a quote.
Related tools
Not sure what a term means?
Open interest, implied volatility, max pain, moneyness, confluence — every term these tools use is defined in one place, with the tool that works with it linked underneath.
Read the glossaryOption price calculator for NSE options
Calculate the option premium, fair value and Greeks for NIFTY, BANKNIFTY and any NSE stock option — using Black-Scholes with live spot price and implied volatility.