Straddle Calculator
Use this free straddle calculator to model your volatility trade before you place it. Enter your strike price and call and put premiums to instantly see max profit, max loss, both breakeven prices, and a full P&L diagram.
How to use the straddle calculator
Enter your strike price and both premiums above and the calculator updates in real time. Here is what each input does.
Enter the strike price
Enter the strike price you are buying for both legs. In a long straddle, the call and put share the same strike, typically at-the-money near the current stock price.
Enter the call premium paid
Enter the premium paid per share for the call option. This is your cost for the upside leg. It adds to your total debit and raises the upper breakeven price.
Enter the put premium paid
Enter the premium paid per share for the put option. This is your cost for the downside leg. Together with the call premium, this determines your total debit and max loss.
Review your results
The P&L diagram updates instantly. Read off both breakeven prices, your max loss at the strike, and how quickly the trade profits as the stock moves away in either direction.
Understanding the long straddle strategy
A long straddle is one of the most straightforward volatility strategies in options trading. You buy a call and a put at the same strike and expiration, paying a combined debit. You do not care which direction the stock moves. You just need it to move far enough in one direction to recover the total cost of both options. That required move is exactly the distance between the strike and either breakeven price.
The strategy works best when implied volatility is relatively low at entry. Because you are buying options, you want IV to expand after you put on the trade, or at a minimum, for the stock to make a large realized move. Buying straddles when IV is already elevated is expensive: the market has already priced in a large move, and the stock needs to exceed that implied move just to break even.
Timing and the IV crush problem
The most common mistake with straddles is buying them directly before a scheduled earnings announcement when implied volatility is at its peak. After the announcement, IV often collapses sharply (known as an IV crush) even if the stock moves significantly. A $5 move in the stock may be more than offset by a $6 drop in option premium. The straddle calculator helps you see your actual breakeven levels so you can assess whether the expected move justifies the premium you are paying.
Managing a long straddle
Many traders choose to close a long straddle before expiration once it has hit a profit target, rather than holding to expiration and risking time decay eating into gains. If the stock makes its big move early in the trade, you can lock in profits and redeploy capital. Conversely, if the position moves against you and time is running out, some traders will close one leg of the losing side and hold the other, converting the straddle into a directional long call or long put.
Straddle example with real numbers
Here is a worked example you can enter directly into the calculator above to see the full P&L diagram in action.
Trade setup: XYZ stock trading at $100.00 ahead of earnings
Explore other options strategy calculators
Each strategy has its own dedicated calculator with a full P&L breakdown, worked example, and FAQ.
Free trading journal
Track whether your straddles are consistently profitable
You modeled the trade. Now find out whether your straddles are consistently profitable. Download the free options trading journal to log entries, exits, and total debit across every earnings play.
- Free options trading journal template (Excel and Google Sheets, instant download)
- Track win rate, average return, and profit factor across all your straddle trades
- Pre-built straddle trade log with date, strikes, expiry, total debit, and outcome columns
- Occasional options trading insights, free with your download
Straddle calculator FAQ
Common questions about the long straddle strategy and how to use this calculator.
A long straddle is an options strategy where you simultaneously buy a call option and a put option on the same underlying stock, with the same strike price and the same expiration date. You pay a net debit equal to the combined premiums. The trade profits when the stock makes a large move in either direction beyond one of the two breakeven prices. The maximum loss is the total premium paid and occurs when the stock closes exactly at the strike price at expiration, causing both options to expire worthless.
On the upside, the maximum profit on a long straddle is theoretically unlimited. As the stock rises above the upper breakeven, the call gains intrinsic value and the profit grows without a ceiling. On the downside, profit is limited to the strike price minus the total debit paid, because a stock can only fall to zero. Using the example of a $100 strike with a $7.00 total debit, the maximum downside profit is $93.00 per share, or $9,300 per contract, if the stock goes to zero. In practice, most traders target a 50 to 100 percent return on the premium paid rather than holding for an extreme move.
The maximum loss is the total premium paid for both legs combined, multiplied by 100 shares per contract. This loss occurs if the stock closes exactly at the strike price at expiration and both options expire worthless. For example, if you paid $3.50 for the call and $3.50 for the put, the max loss is $700 per contract. Because you are buying both options, your risk is always capped at the upfront debit and you can never lose more than what you paid. This defined-risk structure is one of the main reasons traders prefer long straddles over short straddles.
A long straddle has two breakeven prices. The lower breakeven is the strike price minus the total debit paid. The upper breakeven is the strike price plus the total debit paid. For example, with a $100 strike and a $7.00 total debit, the lower breakeven is $93.00 and the upper breakeven is $107.00. For the trade to be profitable, the stock must close below $93.00 or above $107.00 at expiration. Any closing price between those two levels results in a partial or complete loss of premium.
A straddle uses the same strike price for both the call and the put, typically at-the-money. A strangle uses two different strikes: an out-of-the-money call above the stock price and an out-of-the-money put below it. Because the strangle uses OTM options, the total debit is lower and the position is cheaper to buy. However, the stock needs to make a larger move to reach the breakeven prices. The straddle costs more upfront but has a tighter breakeven range, making it more sensitive to smaller moves. Use the straddle calculator and the strangle calculator side by side to compare the cost and required move for a specific underlying before you decide which structure fits your trade.
Long straddles work best when you expect a large move in either direction but are not sure which way the stock will go. Common use cases include buying a straddle before an earnings announcement, a Federal Reserve decision, a drug trial result, or any event with an uncertain but potentially large outcome. The key risk is buying a straddle when implied volatility is already elevated. After the event, IV often collapses sharply even if the stock moves. A $5 move on a stock can be more than offset by a $6 drop in premium from IV crush. The straddle calculator helps you see your exact breakeven levels upfront so you can decide whether the implied move justifies the premium you are paying before you commit.
This calculator is for educational and informational purposes only. Options trading involves substantial risk and is not suitable for all investors. Past performance is not indicative of future results. Always consult a licensed financial professional before making investment decisions.