Quickly adjust any variable in the equation to see how it affects the final answer. Simply use the provided scroll bars once entering a value to adjust (on the fly) the final answer. Variables which allow for sensitivity study include: - Stock Price - Option Strike Price - Risk-Free Interest Rate In addition to solving the standard Black-Scholes formula, this calculator also adjusts the solution to account for dividends (if applicable) in the underlying stock. However, dividends can also be excluded from the calculation and set to zero if the user desires a true original Black-Scholes value. Standard inputs into the solver include: - Volatility - Call Price - Put Price - Current Stock Price - Date of Option Expiration - Stock Dividend Rate - Risk-Free Interest Rate Solutions from the solver include: - Volatility Given Put Price - Volatility Given Call Price - Put Price Given Volatility - Call Price Given Volatility Slight rounding errors in the final solution may exist due to the standard approximation made to solve the cumulative normal distribution function. However, the final value with these errors matches closely to many other Black-Scholes solvers available today.