# Market Cap > The current price of a coin multiplied by how many are in circulation. A rough size measure. Canonical URL: https://fudfomo.co/glossary/market-cap Source: What The Block! Dictionary v1.0 (last updated 2026-04-25), browsable at https://wtb.fudfomo.co. ## Definition Market capitalisation, or market cap, is calculated as the current price times the circulating supply. It is the standard way to compare the size of one cryptocurrency to another. Market cap is not the same as the amount of money put into a project, and it can change quickly with the price. A small token with a low circulating supply can show a huge fully diluted valuation that is unlikely to ever be realised. ## Related terms - [Circulating Supply](https://fudfomo.co/glossary/circulating-supply): How many coins or tokens are actually in the market right now and free to trade. - [Total Supply](https://fudfomo.co/glossary/total-supply): The maximum number of coins or tokens that will ever exist for a project. - [Tokenomics](https://fudfomo.co/glossary/tokenomics): The economic design of a token: total supply, how it is distributed, and how it changes over time. ## See the full catalogue What The Block! covers more than 2,000 plain-English crypto terms, delivered as embeddable hover-state tooltips for crypto exchanges. https://wtb.fudfomo.co