Free options calculators
Price options with Black-Scholes, solve implied volatility, chart the profit and loss of any strategy, size a position to your risk, and check covered call returns. Every tool runs in your browser, needs no account, and shows the formula it uses.
Options Profit Calculator
Free options profit calculator. Model calls, puts, spreads, straddles, strangles, iron condors and covered calls with a P/L chart at expiry and today, breakevens, max profit and max loss.
Black-Scholes Calculator
Free Black-Scholes calculator for call and put prices with every greek: delta, gamma, theta per day, vega per vol point and rho. Instant results, formula included.
Implied Volatility Calculator
Free implied volatility calculator. Enter an option's market price and get the Black-Scholes implied volatility, solved with Newton's method and a bisection fallback.
Expected Move Calculator
Free expected move calculator. Get the 1 and 2 standard deviation price range from implied volatility and days to expiry, or estimate the move from the at-the-money straddle.
Position Size Calculator
Free position size calculator. Enter account size, risk percent, entry and stop to get how many shares or option contracts to trade so a stop-out costs only what you planned.
Covered Call Calculator
Free covered call calculator. See premium yield, annualized return, return if called away, breakeven and max profit for selling a call against 100 shares.
For education only, not financial advice. Read the disclaimer.