Compute profit, break-even and return for a long call option.
Please do not make financial decisions based on these results.
What is the Call Option Calculator?
Compute profit, break-even and return for a long call option. To use the Call Option Calculator, enter strike price, premium per share, stock price at expiry, contracts; it returns profit at expiry, break-even price, total premium paid, return on premium, and shows them instantly as you type.
Understanding option pricing
The Black Scholes Calculator needs six inputs: stock price, strike, time to expiry, risk-free rate, dividend yield and volatility. Volatility has the biggest effect and is the one you must estimate. Use the Greeks calculator to see how the price will move before expiry.
Before a trade, compute the payoff. The Call Option Calculator and Options Spread Calculator show break-even and maximum loss, and the Margin Call Calculator shows how far a stock can fall in a margin account before a call.
- Parity. Put-call parity checks that call and put quotes agree with the stock and the interest rate.
- Futures and forwards. Futures P&L, forward rates and forward premium convert price moves into dollars.
How to use the Call Option Calculator
- Enter your numbers. Start with Strike price ($), Premium per share ($), Stock price at expiry ($), then fill in Contracts. Use real figures from your own records where you can. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Profit at expiry, and the cards below show Break-even price, Total premium paid, Return on premium. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the Call Option Calculator using the default values shown in the calculator above:
Inputs
| Strike price ($) | 150 |
|---|---|
| Premium per share ($) | 6.2 |
| Stock price at expiry ($) | 165 |
| Contracts | 2 |
Results
| Profit at expiry | $1,760.00 |
|---|---|
| Break-even price | $156.20 |
| Total premium paid | $1,240.00 |
| Return on premium | 141.94% |
With these inputs the calculator returns Profit at expiry: $1,760.00. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Strike price ($) from 150 to 180 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Profit at expiry | $1,760.00 | -$1,240.00 | -170.5% |
| Break-even price | $156.20 | $186.20 | +19.2% |
| Total premium paid | $1,240.00 | $1,240.00 | 0% |
| Return on premium | 141.94% | -100% | -170.5% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the Call Option Calculator reports Profit at expiry, break-even price, total premium paid and return on premium. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
What is the break-even of a call?
The strike price plus the premium paid per share.
Can I lose more than I invest?
Buying options risks only the premium, but selling uncovered options or trading futures can lose far more than the margin posted.
What do the Greeks mean?
Delta is price sensitivity to the stock, gamma is the change in delta, and vega is sensitivity to volatility.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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- Options Spread Calculator
- Option Greeks Calculator
- Put-Call Parity Calculator
- Margin Call Calculator
- Futures Contracts Calculator
- Black Scholes Calculator
- Forward Rate Calculator
- Forward Premium Calculator
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