About Options Price Calculator
Options Price Calculator is a free options profit & loss calculator. Build a multi-leg strategy, type in your own strikes, premiums, and expirations, and see a P&L matrix across price and time.
Pricing runs on a Cox-Ross-Rubinstein (CRR) binomial model with constant implied volatility, chosen over a plain Black-Scholes quote because it correctly handles early exercise on American-style options - a case that matters for deep-ITM puts and short calls near a dividend.
P&L across price and time, not just at expiry
Most free options calculators only show you the payoff on expiration day. That's a start, but it skips the question every trader actually faces: what does this position look like next week, if the stock hasn't moved yet, or has only moved halfway there? Options Price Calculator's P&L matrix plots outcomes across a grid of both price and date - today, partway to expiration, and at expiry - so you can see how a trade's value decays or grows over time, not just where it lands at the end. That's the information you actually need to plan an exit before expiration, not just judge whether a strategy is worth entering.
Built for real multi-leg strategies
Combine up to 8 legs - spreads, condors, strangles, calendars, or anything else you can construct. Type in each leg's strike, premium, and expiration by hand, and the same CRR pricing engine runs entirely in your browser - no live data required.
Free, private, and works offline
No account, no signup, no paywall. Every calculation runs client-side in your browser - the strategies you build are never sent to or stored on our servers. Options Price Calculator can also be installed as an app on your phone or desktop, and it keeps working even with no internet connection.
For any questions, contact us at Contact.
Options Price Calculator is for educational purposes only and is not financial advice; nothing here is a recommendation to buy or sell any security, and no warranty is made as to the accuracy of any price or figure shown.