MCX Conversion Calculator. It converts bullion i.e. Gold and Silver, Crude and Copper, and base metal i.e. Zinc, Lead, Nickel and Aluminium prices of US Dollar to Indian Rupees. Example: Choose your commodity.(Gold, Silver, Copper, etc)Then enter the price of US dollar commodity.Then enter the price of Indian Rupees Exchange Rate.And get the MCX Parity Price in INR Rs.