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

How is JoinCoin Market Cap calculated?

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

JoinCoin Market Capitalization in USD = Number of J in supply X Price of one JoinCoin in USD

Since the price of JoinCoin 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 JoinCoin or predict the price of JoinCoin.