Published: 2026-05-18
What Is Crypto Market Cap? Formula, FDV, and Rankings Explained
Market cap is the number everyone uses to rank coins, but it's easy to misread. Here's the formula, a quick FDV note, and how to use rankings wisely.
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Market cap stands for market capitalization. It estimates the total value of a coin's circulating supply.
It's the main number used to rank coins by size, similar to how it's used for stocks.
- Represents a coin's total estimated value
- Based on price and the coins currently in circulation
- The standard metric for ranking coins by size
- Higher market cap generally means more established
The Formula: Price × Supply
Market cap = current price per coin × circulating supply.
Both numbers change constantly, so market cap moves with them in real time.
- Take the current price of one coin
- Multiply it by the circulating supply
- The result is the market cap figure
- Recalculated continuously as price and supply change
A Simple Worked Example
Imagine a coin priced at $2, with 500 million coins in circulation.
Market cap = $2 × 500,000,000 = $1 billion.
- Price: $2 per coin
- Circulating supply: 500 million coins
- Market cap: $1 billion
What Is FDV (Fully Diluted Valuation)?
FDV estimates value using the maximum possible supply, not just what's currently circulating.
A large gap between market cap and FDV can signal a lot of future supply still waiting to enter the market.
- FDV = current price × maximum possible supply
- Differs from market cap when not all coins are circulating yet
- A wide gap suggests more future dilution risk
- Useful as a rough check, not a full valuation on its own
How to Read Coin Rankings Correctly
Rankings by market cap show relative size, not quality or safety.
A high rank means more capital is parked in that coin, not that it's automatically a better investment.
- High market cap usually means more liquidity
- Rank alone doesn't reflect risk or project quality
- Always check circulating vs. total supply, not just price
- Compare market cap and FDV together, not price alone
A Quick Checklist Before Trusting a Ranking
Before assuming a coin is 'safe' because of its rank, check a few extra details.
This helps you avoid common misreadings of the numbers.
- Check both market cap and FDV, not just one
- Look at circulating supply versus total supply
- Remember rank reflects size, not project quality
- Compare trading fees and liquidity, not rank alone
- Don't assume price alone tells you the full story
FAQ: Market Cap Questions
Here are quick answers to the most common questions about market cap.
These apply whether you're comparing two coins or scanning a full ranking list.
- Is a higher price always a higher market cap? No, supply matters just as much as price.
- Can market cap be manipulated easily? It's harder to move than price alone, but not impossible with unusual supply behavior.
- Is FDV more important than market cap? Neither alone is complete; checking both gives a clearer picture.
- Does market cap include coins that are locked or unreleased? No, market cap uses circulating supply, not locked or unreleased coins.
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