How to calculate implied volatility for nifty options?

Different countries have a different index like the Deutscher Aktien index or DAX - dow jones or nifty - Sensex - Kospi-nikkei etc.
Implied volatility we use various parameters like the underlying price of an index
Starting date of option buying and selling - historical volatility of the index like nifty - DAX - Dow jones-
Risk-free interest rates as per countries,
The dividend yield as per countries
Download the excel sheet from here
Set the strike price of the option as per your index
After entering these values in the excel sheet you will find the theoretical prices of option
Enter the actual values available for trading at the different strike price
Check the implied volatility

Nifty Option trading automated excel sheet