Analyze a bull call spread: max profit, max loss and break-even.
Please do not make financial decisions based on these results.
What is the Options Spread Calculator?
Analyze a bull call spread: max profit, max loss and break-even. To use the Options Spread Calculator, enter long call strike, short call strike, long call premium, short call premium, contracts; it returns net debit per share, maximum profit, maximum loss, break-even price, and shows them instantly as you type.
Where the Options Spread Calculator fits
Analyze a bull call spread: max profit, max loss and break-even. The main figure it returns is the Net debit per share, worked out from the values you enter.
It belongs with the other options & derivatives tools. If you are comparing options or checking a result from another angle, try the Call Option Calculator, Black Scholes Calculator or the Futures Contracts Calculator.
How to use the Options Spread Calculator
- Enter your numbers. The inputs are Long call strike ($), Short call strike ($), Long call premium ($), Short call premium ($), 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 Net debit per share, and the cards below show Maximum profit, Maximum loss, Break-even price. 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 Options Spread Calculator using the default values shown in the calculator above:
Inputs
| Long call strike ($) | 100 |
|---|---|
| Short call strike ($) | 110 |
| Long call premium ($) | 6.5 |
| Short call premium ($) | 2.8 |
| Contracts | 1 |
Results
| Net debit per share | $3.70 |
|---|---|
| Maximum profit | $630.00 |
| Maximum loss | $370.00 |
| Break-even price | $103.70 |
With these inputs the calculator returns Net debit per share: $3.70. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Long call strike ($) from 100 to 120 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Net debit per share | $3.70 | $3.70 | 0% |
| Maximum profit | $630.00 | -$1,370.00 | -317.5% |
| Maximum loss | $370.00 | $370.00 | 0% |
| Break-even price | $103.70 | $123.70 | +19.3% |
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 Options Spread Calculator reports Net debit per share, maximum profit, maximum loss and break-even price. 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
Why use a spread?
It limits both risk and reward and lowers the cost versus a single option.
What do the Greeks mean?
Delta is price sensitivity to the stock, gamma is the change in delta, and vega is sensitivity to volatility.
Does Black-Scholes work for American options?
It prices European options. American options can be exercised early and may be worth slightly more.
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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