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StrikeWright
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Options Profit Calculator
See how much a call or put option makes or loses at expiry, where it breaks even, and your best and worst case. Drag across the chart to test any stock price.
How to use it
- Pick the trade: buying or selling a call or a put.
- Enter the stock, today's stock price, the strike, and the premium your broker shows.
- Read your cost, breakeven, best case and worst case. Drag across the chart to see the result at any stock price on expiry day.
New to options? Start with our free options lessons.
Options profit questions
How do you calculate the profit of a call option?
At expiry, a bought call is worth the stock price minus the strike, or zero if the stock is below the strike. Profit is that value minus the premium you paid, times 100 shares per contract.
What is the breakeven price of an option?
For a call, breakeven is the strike plus the premium. For a put, it is the strike minus the premium. Past that price, the trade makes money at expiry.
What is the most I can lose buying an option?
When you buy a call or a put, the most you can lose is the premium you paid. Selling options can lose far more, and selling a call without owning the stock has unlimited risk.
Why does one contract cost 100 times the premium?
One standard US stock option contract covers 100 shares. A premium of $4.20 per share costs $420 per contract.
Does this include time value before expiry?
No. This calculator shows the result on expiry day, before fees. Before expiry an option also has time value, so its price can differ from these numbers.