Cryptocurrency market cap is the total USD value of a cryptocurrency, calculated as current price multiplied by circulating supply. It's the standard metric for ranking coins by size.
Crypto Market Cap = Current Price × Circulating Supply
Circulating supply is coins in the market now; total supply includes locked coins; max supply is the hard cap. Only circulating supply drives market cap.
A coin with a $1B market cap but only $10K daily volume cannot actually be sold at that price. Always check trading volume alongside market cap.
Related: Crypto Market Cap Rankings · Circulating Supply vs Market Cap