Market Cap vs FDV: What Fully Diluted Valuation Tells You That Market Cap Hides

Market capitalization is the current price of a coin multiplied by its circulating supply, the tokens that exist and can trade today. Fully diluted valuation (FDV) is the same price multiplied by the maximum supply, or the total supply where no maximum is set, so it counts every token that will ever exist, including the ones still locked in vesting contracts, treasuries and emission schedules. The gap between the two numbers is the dilution still to come, and it's the first thing to check before taking any price target seriously.

What is the difference between market cap and FDV?

Both numbers start from the same price. They differ only in which supply figure they multiply it by.

Market cap = price x circulating supply

FDV = price x max supply (or total supply where there's no max)

Circulating supply is the count of tokens that are out in the market and free to trade. It excludes team and investor allocations that haven't vested, foundation reserves that haven't been distributed, and anything sitting in a lock contract. Max supply is the hard cap on how many tokens will ever exist. Total supply is the number created so far, minus anything burned. Where a coin has no max, data sites such as CoinGecko use total supply for FDV, and their published methodology explains how they source and verify the supply figures behind both numbers.^[1] The tokenomics guide breaks down the three supply figures and how to read an emission schedule. This guide is about what happens when you put the two valuations side by side.

Market cap answers one question: what is the market paying for the tokens that exist today? FDV answers a different one: what would this project be worth at today's price if every token were already out? Neither is money anyone holds. Both are a price times a count. But the second one is the honest denominator for any project that still has most of its supply locked, because that supply is coming whether or not the price agrees.

A worked example

Take an illustrative token, call it XYZ, trading at $2.00. Its circulating supply is 250 million and its max supply is 1 billion.

Market cap = $2.00 x 250,000,000 = $500 million

FDV = $2.00 x 1,000,000,000 = $2 billion

FDV to market cap ratio = 4

Three quarters of the supply hasn't reached the market. Now run the two questions that matter.

First, what does the current price assume? If XYZ holds $2.00 while the remaining 750 million tokens vest, its market cap climbs to $2 billion with no change in price. Someone has to buy $1.5 billion of new supply at that price for that to happen. That's the demand the current valuation quietly requires.

Second, what does a price target imply? Say a thread calls for $10. At full supply that's an FDV of $10 billion. Put it into the market cap calculator and compare it with coins already at that size. If the target puts a two-year-old protocol level with a top-twenty asset, the target is a story, not a valuation.

The reverse framing is just as useful. If the market only ever supports $500 million of value for XYZ, the fully diluted price is $0.50, not $2.00. That's what dilution means in dollars.

Why does a high FDV to market cap ratio matter?

Because price discovery is happening on a thin float. When a quarter of the supply trades and the rest is locked, the price reflects demand against that quarter. Every vesting cliff and every emission adds supply the market has to absorb at whatever the price is then. Sometimes it does. Often it doesn't, and the price adjusts until the market cap, not the FDV, matches what buyers are willing to pay.

This is the low float, high FDV problem that ran through launch debates in 2024 and 2025. Tokens listed with 10% to 20% of supply circulating, headline market caps that looked modest, and fully diluted valuations in the billions. Early investors and teams sat on the locked majority. As those allocations vested, the sell pressure was structural rather than sentimental: nobody needed to turn bearish for the supply to grow. The token unlocks guide covers how to read a vesting calendar and which unlocks tend to hit hardest.

The ratio isn't a verdict on its own. A ratio of 4 with a slow four-year linear vest is a different picture from a ratio of 4 with a 30% cliff next quarter. The number tells you how much dilution is queued. The schedule tells you when it lands. You need both.

One property of the ratio is easy to miss. FDV divided by market cap is the same as max supply divided by circulating supply, so price cancels out entirely. A coin can double or halve and the ratio doesn't move. It's a supply metric wearing a valuation costume, which is why it works as a screening tool: it tells you how much of the eventual supply is on the market before you've formed any view on price. CoinGecko and CoinMarketCap show market cap and FDV side by side on every coin page, so the division takes a second. Most people never do it.

When FDV overstates the picture

FDV assumes every token arrives at today's price, which is never quite true. Sometimes the assumption is harmless and sometimes it's absurd, and the difference is time.

Bitcoin is the clean case. Roughly 19.9 million of the 21 million BTC cap are in circulation by mid 2026, and the remaining coins arrive on a halving schedule that runs past the year 2100.^[2] Its FDV to market cap ratio sits around 1.05 and drifts toward 1 at a pace no holder will feel. Discounting supply that lands in eighty years is fine.

Ethereum has no max supply. Data sites fall back to total supply, which makes ETH's FDV equal to its market cap. That's the convention, but it hides two things: new issuance to validators, and the EIP-1559 fee burn that destroys part of every transaction fee and has held net supply between slightly positive and slightly negative depending on how busy the chain is.^[3] For an asset like that, the annual net issuance rate is the number that matters, and the ratio can't show it.

Then there are tokens whose max supply is a marketing figure. A cap of 10 billion with a hundred-year emission tail and a governance vote that could change it isn't the same thing as a hard-coded schedule. Read the tokenomics before you trust the denominator.

Market cap, FDV and the on-chain view

Both numbers are price times a count, which makes them swing with every move in price. On-chain analysts fix that with realized cap, which values each coin at the price it last moved instead of the current price, and with the MVRV ratio, which divides market cap by realized cap to measure how far the market has run from its aggregate cost basis.

FDV has no realized equivalent, because locked tokens haven't moved yet. Their cost basis is whatever the insiders paid, often close to zero. That's another way of seeing why a high ratio matters: the supply still to come was acquired cheaply, and every unit of it is in profit at almost any price. The holders of circulating supply and the holders of locked supply are playing different games, and the ratio tells you how big the second group is.

What to check, by situation

A new listing with most of the supply locked. Use FDV as the valuation and compare it with established projects doing the same job. Layer 2 governance tokens are the textbook case: most launched between 2023 and 2025 with small floats and fully diluted valuations in the billions, and their charts since then are a study in what vesting does to a thin float. Then pull the unlock calendar and note the next cliff.

A mature coin with a ratio near 1. The ratio has nothing left to say. Look at the annual inflation rate and whether burns offset it. A ratio of 1.02 on a coin emitting 8% a year is more dilutive than a ratio of 1.2 on a coin that has finished its cliffs.

A price target from anywhere. Convert it to an FDV, not a market cap, and compare that figure with assets already trading at that size. The calculator linked from this guide does the arithmetic. If the implied FDV needs a market bigger than the sector it lives in, the target is fiction.

A token with no max supply. FDV is a placeholder. Check net issuance instead, and whether governance can change it.

A token with real burns. Buybacks and fee burns lower total supply, so the FDV of a coin with no max can fall even as the price holds. Check how large the burn is against emissions before crediting it. A burn that removes 0.1% of supply a year against 5% of new issuance is a rounding error dressed as a policy.

None of this tells you what to do with a token. It tells you which number to read, and that's the part most people get wrong.