Is this a strategy builder that tells me what to trade?

No. It draws the payoff of any position you type in. The starting shapes are common textbook shapes to learn from, not suggestions.

Why does my broker show a different profit before expiry?

Before expiry an option has time value, which changes with time and volatility. This chart shows only the value at expiry.

What does unlimited loss mean?

If you sell a call without owning the underlying or a higher call, the loss keeps growing as the price rises, with no cap.

Option Payoff Calculator: Profit and Loss Chart at Expiry

Add the legs of a position: buy or sell, call or put, strike, premium and quantity. See the profit or loss at every price at expiry.

How to use it

Type the price of the underlying today, and tap a starting shape, or add legs yourself.
For each leg, choose buy or sell, call (CE), put (PE) or future, the strike (or the future’s price), the premium and the quantity (lots × lot size).
Replace the example premiums with the real ones from your broker’s option chain.

The arithmetic at expiry

At expiry, a call is worth max(0, price − strike) and a put is worth max(0, strike − price). A buyer’s profit is that value minus the premium paid; a seller’s is the premium received minus that value. The calculator adds up every leg at every price to draw the line.

Worked example

You buy one lot of 65 of a call with a strike of 1,000 for a premium of ₹20. The most you can lose is the premium: 20 × 65 = ₹1,300. You break even at 1,000 + 20 = 1,020 at expiry. Above that, every rupee the price rises adds ₹65. If you also sell a 1,050 call for ₹8, you receive ₹520, so the cost drops to ₹780 and the break-even to 1,012, but the profit is capped at (50 − 12) × 65 = ₹2,470.

What the chart leaves out

It shows expiry only. Before expiry, an option’s price also depends on time left and volatility (see option Greeks), so the profit or loss on a given day is different.
Charges and taxes are not included; selling options now carries STT of 0.15% of the premium. See the brokerage calculator.
Sellers need margin and can face losses many times the premium received. A line that says Unlimited means exactly that.

Questions people ask

Is this a strategy builder that tells me what to trade?: No. It draws the payoff of any position you type in. The starting shapes are common textbook shapes to learn from, not suggestions.
Why does my broker show a different profit before expiry?: Before expiry an option has time value, which changes with time and volatility. This chart shows only the value at expiry.
What does unlimited loss mean?: If you sell a call without owning the underlying or a higher call, the loss keeps growing as the price rises, with no cap.

Option payoff calculator