What Is Market Cap in Crypto? FDV and Token Supply Explained

Market capitalization, usually shortened to market cap, is one of the first numbers people look at when they research a cryptocurrency. It is shown next to almost every coin on price tracking sites, and it is often used to rank assets from largest to smallest. Yet market cap is easy to misread. A token can look cheap or expensive depending on which supply figure is used, and two projects with the same price per token can have completely different valuations. This guide explains what market cap actually measures, how it relates to fully diluted valuation (FDV), and how to use these numbers more carefully.

What market cap means

In crypto, market cap is calculated with a simple formula: the current price of one token multiplied by the number of tokens in circulation. If a token trades at 2 dollars and 50 million tokens are circulating, its market cap is 100 million dollars.

The key insight is that the price of a single token tells you very little on its own. A token priced at a fraction of a cent can have a larger market cap than a token priced at hundreds of dollars, simply because far more units exist. When people say a coin is cheap because its price is low, they are usually ignoring supply. Market cap puts different projects on a comparable scale.

Market cap is not the amount of money invested in a project, and it is not the amount that could be withdrawn if everyone sold. It is a snapshot based on the last traded price. If many holders tried to sell at once, the price would fall, so the real value that could be realized is usually lower than the headline figure.

Circulating, total and max supply

Token supply is described with three different numbers, and understanding the difference is essential:

• Circulating supply: tokens that are currently available and can be traded on the market. This is the number normally used to calculate market cap.
• Total supply: all tokens that have been created so far, minus any that have been permanently burned. It includes tokens that are locked, held by the team, reserved for future rewards or not yet released.
• Max supply: the maximum number of tokens that can ever exist according to the project’s rules. Bitcoin, for example, has a fixed max supply of 21 million coins. Some tokens have no max supply at all, which means new units can keep being created.

Data providers do not always agree on circulating supply, because it depends on which wallets are considered locked or reserved. That is why you may see slightly different market cap figures for the same token on different sites.

Fully diluted valuation (FDV)

Fully diluted valuation answers a different question: what would the project be worth at today’s price if every token that will ever exist were already in circulation? It is calculated as price multiplied by max supply, or by total supply when no max supply is defined.

When market cap and FDV are close to each other, most tokens are already circulating and there is limited future dilution. When FDV is many times higher than market cap, a large share of the supply is still waiting to be released through team allocations, investor unlocks, ecosystem funds or staking rewards.

Why low float and high FDV matter

A token with a small circulating supply compared to its total supply is often called low float. This setup can create a few risks that are worth understanding before buying:

• Unlock pressure: when locked tokens are released on a schedule, early investors or team members may sell, adding supply to the market.
• Misleading rankings: a modest market cap can hide a very large FDV, so the project may be valued much higher than it first appears.
• Easier price swings: with fewer tokens actually trading, relatively small buy or sell orders can move the price sharply.

None of this automatically makes a project bad. Many legitimate projects release tokens gradually. The point is to know the schedule. Look for an official tokenomics page or documentation that explains who holds the remaining supply and when it unlocks.

💡 Compare market cap with FDV for any token you research. A large gap is a signal to read the vesting and unlock schedule before making decisions.

Trading volume vs market cap

Trading volume is the total value of a token bought and sold over a period, usually 24 hours. It shows how actively a token is traded, while market cap shows its overall size. Looking at the two together can reveal useful context.

• Very low volume relative to market cap can mean the token is hard to buy or sell without moving the price, and the market cap figure may not reflect real demand.
• Unusually high volume relative to market cap can reflect genuine interest, but it can also come from wash trading, where the same parties trade back and forth to make activity look larger.
• Sudden volume spikes often accompany news, listings or unlocks, and are worth investigating rather than taking at face value.

For tokens traded mainly on decentralized exchanges, liquidity in the pools matters as much as volume. A token can report a large market cap while only a small amount of liquidity backs it, which means the price could drop quickly if holders start selling. On CoinBoard you can view a token’s market cap, FDV and DEX liquidity side by side, which makes these gaps easier to notice.

Using market cap sensibly

Market cap is a helpful starting point, but it is only one piece of the picture. A sensible approach is to combine several checks:

1. Check the circulating, total and max supply and confirm where the data comes from.
2. Compare market cap with FDV to estimate future dilution.
3. Look at trading volume and liquidity to see whether the market is genuinely active.
4. Read the project’s official tokenomics and unlock schedule.
5. Consider how concentrated the holdings are among a few wallets.

Do your own research

Market cap, FDV and volume are tools for understanding, not signals to buy or sell. Numbers can change quickly, data sources can differ, and no metric can predict where a price will go. Always verify information from multiple sources, read official project documents, and never invest more than you can afford to lose. This article is for educational purposes only and is not financial advice.