Call Option Calculator

This call option calculator shows the profit, loss and break-even point of a long call option at expiry, so you can see what a trade is worth before you place it. A call option gives you the right, but not the obligation, to buy 100 shares per contract at a fixed strike price, in exchange for a premium you pay up front. You enter the strike price, the premium per share, the number of contracts, and the price you expect the underlying stock to reach at expiry. The calculator works out the option's intrinsic value at that price, your total profit or loss across all contracts, the break-even price the stock must pass for the trade to pay off, the maximum you can lose, and your percentage return on the premium at risk. Because a call's downside is capped at the premium paid while its upside rises with the share price, the payoff is asymmetric, and seeing the numbers laid out makes that clear. Use it to compare strikes, to judge whether an expected move justifies the premium, and to set realistic targets. This is a simple expiry-value model: it ignores time value before expiry, implied volatility, dividends, commissions and taxes, so treat it as an illustration of the payoff rather than a live option price.

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$
$
×100
$
$1,000.00
profit or loss on the trade at expiry
Break-even$105.00
Max loss$500.00
Return+200.0%

A call with a $100.00 strike bought for $5.00 breaks even at $105.00. At $115.00 each share is worth $15.00 of intrinsic value, so 1 contract (100 shares) returns a $1,000.00 profit on $500.00 at risk, a +200.0% return.

Expiry-value model only. It ignores time value before expiry, implied volatility, dividends, commissions and taxes. Not financial advice.

How it works

A call option's value at expiry is its intrinsic value: the amount the share price sits above the strike, or zero if the stock finishes at or below the strike. Each contract controls 100 shares, so the option is worth that per-share intrinsic value times 100 times the number of contracts. Your profit or loss is the option's expiry value minus the premium you paid for it. The break-even price is simply the strike plus the premium per share, because the stock has to rise by the premium before you recover your cost. The most you can lose on a long call is the premium you paid, no matter how far the stock falls, which is why the maximum loss equals your total cost. The percentage return divides your profit or loss by that cost, showing how hard the premium worked.

Worked example

Say you buy 1 call contract with a 100 dollar strike for a premium of 5 dollars per share, and the stock finishes at 115 dollars at expiry. The option is 15 dollars in the money, 115 minus 100, so one contract is worth 15 times 100, which is 1,500 dollars. You paid 5 times 100, which is 500 dollars, so your profit is 1,500 minus 500, which is 1,000 dollars. The break-even was 105 dollars, the strike plus the premium, and the stock cleared it comfortably. On 500 dollars at risk, a 1,000 dollar profit is a 200 percent return. Had the stock finished at or below 100 dollars, the option would expire worthless and you would lose the full 500 dollar premium.

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Frequently asked questions

How do you calculate the break-even on a call option?

The break-even price of a long call is the strike price plus the premium paid per share. The stock has to rise by the premium before you recover your cost. For example, a 100 dollar strike bought for a 5 dollar premium breaks even when the stock reaches 105 dollars at expiry.

What is the maximum loss on a call option?

For a long call, the most you can lose is the premium you paid, no matter how far the stock falls. If the stock finishes at or below the strike at expiry, the option expires worthless and you lose the whole premium, which is why the maximum loss equals your total cost.

How is call option profit calculated?

At expiry the option is worth its intrinsic value: the amount the stock is above the strike, times 100 shares per contract, times the number of contracts. Profit is that value minus the premium you paid. Below the strike the option is worth zero, so the loss equals the premium.