Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Investing
Options Break-Even Calculator
Find the break-even price for a call or put option at expiration: strike plus premium for calls, strike minus premium for puts. The price the underlying must reach to start profiting.
Betting Odds
Kelly Criterion Calculator
Calculates the mathematically optimal percentage of your bankroll to wager on a positive-EV bet using the Kelly Criterion, with optional fractional Kelly for reduced variance. Use it to maximize long-run growth while controlling ruin risk.
Key differences
| Options Break-Even Calculator | Kelly Criterion Calculator | |
|---|---|---|
| Category | Investing | Betting Odds |
| Inputs required | 3 | 4 |
| Result | Break-Even Price ($) | Optimal Bet Size ($) |
| What it does | Find the break-even price for a call or put option at expiration: strike plus premium for calls, strike minus premium for puts. The price the underlying must reach to start profiting. | Calculates the mathematically optimal percentage of your bankroll to wager on a positive-EV bet using the Kelly Criterion, with optional fractional Kelly for reduced variance. Use it to maximize long-run growth while controlling ruin risk. |