You can check out above graph to see how the market cap of Bitcoin Gold has changed over time. The market cap value depends on the value of Bitcoin Gold on that particular day and number of Bitcoin Gold in supply at that day.

How is Bitcoin Gold Market Cap calculated?

The Bitcoin Gold Market cap is calculated using a simple formula. You can find it below:

Bitcoin Gold Market Capitalization in USD = Number of BTG in supply X Price of one Bitcoin Gold in USD

Since the price of Bitcoin Gold is highly volatile you can see the market cap going up and down a lot. Sometimes price and market cap are not linear to each other due to increase in the supply of coins in the market and stable or decrease in the price of the coin. So you can say that it's not simple to predict the market cap of Bitcoin Gold or predict the price of Bitcoin Gold.