How to Use the Option Premium Calculator

1. Choose call or put. 2. Enter the stock price, strike, days to expiration, implied volatility, interest rate and dividend yield. 3. Read the theoretical price and the five Greeks.

Change one input at a time to learn how options behave: raise volatility to see vega, shorten the days to see theta, and move the stock price to see delta and gamma.

Results are educational estimates from standard formulas, not investment advice. Live prices, fees and your broker's rules can change the outcome.