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Options Profit Calculator at Expiration

Model a long call or long put held to expiration. Enter the strike, the premium you paid, the stock price at expiry and the number of contracts.

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Profit or loss at expiration

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Option value at expiration
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Premium paid
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Break-even stock price
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Return on premium
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Tips for using the options profit calculator

  • Most options lose value as expiration nears if the stock does not move; time is not on the buyer's side.
  • Check the probability implied by the break-even price before buying far out-of-the-money options.
  • Options are risky and can expire worthless; read the OCC's "Characteristics and Risks of Standardized Options".

How the options profit calculator works

At expiration an option is worth only its intrinsic value. A call is worth the amount the stock is above the strike; a put is worth the amount it is below. One standard US equity contract covers 100 shares.

Call value = max(0, Stock − Strike) × 100 × contracts
Put value = max(0, Strike − Stock) × 100 × contracts
Profit = Value − Premium × 100 × contracts

Break-even is the strike plus the premium for a call, or the strike minus the premium for a put. The most a buyer can lose is the premium paid. Before expiration, options also carry time value that depends on volatility and days left, which this expiration-only model does not include. Commissions are also excluded.

Worked example

You buy one $100 call for $4.00 per share, paying $400. If the stock finishes at $112, the call is worth $12 × 100 = $1,200, for a profit of $800.00, a 200% return on the premium. Break-even is $104. If the stock finishes at $99, the call expires worthless and you lose the full $400.

Frequently asked questions

How many shares is one option contract?

Standard US equity options cover 100 shares, so a $4 premium costs $400 per contract.

What is the break-even price for a call?

Strike plus premium. A $100 call bought for $4 breaks even at $104 at expiration.

What is the maximum loss when buying options?

The premium you paid, plus commissions.

Does this calculator handle selling options?

It models buying. A seller's profit is the mirror image: the buyer's loss is the seller's gain, but sellers can face large or unlimited losses.

Updated October 2026. Results are estimates for education, not financial or medical advice. All math runs in your browser; nothing you type is sent anywhere.

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