What is supply in crypto? Circulating, total and max supply
Supply in crypto is the number of coins or tokens of a cryptocurrency that exist now, or ever will. It is measured in three ways: circulating supply (what is actively traded), total supply (what exists, including locked tokens) and max supply (the most that can ever be created).
These supply metrics matter because a coin’s price on its own tells you very little. Combined with supply, it tells you a project’s market cap, how scarce the coin is, and how much new supply could hit the market later.
What is supply in crypto?
Supply in crypto describes how many coins or tokens of a specific cryptocurrency exist. Unlike a central bank’s money supply, a coin’s supply is usually set by its code or by its creators, and the rules are public.
There are three supply figures you will see on data sites:
| Supply type | What it counts | What it tells you |
|---|---|---|
| Circulating supply | Coins in public hands and actively traded on the open market | The basis for market cap |
| Total supply | All coins created so far, minus burned coins, including locked tokens | How much could still enter circulation |
| Max supply | The maximum number of coins that can ever exist | Long-term scarcity, if there is a cap |
The gaps between them are where the useful information sits.
Circulating supply
Circulating supply refers to the coins that are available to the public and can be bought and sold right now. It excludes tokens held back by the project’s team, early investors or a foundation under lock-up rules.
Bitcoin’s circulating supply is simply the coins mined so far. Coins sitting in an inaccessible wallet, for example because the owner lost the keys, still count, even though nobody can ever move them. So the real tradable supply is often a little lower than the official figure. See our page on circulating supply for how data sites calculate it.
Total supply vs circulating supply
The difference between total supply vs circulating supply is the locked supply: tokens that already exist but can’t be sold yet. These are often allocated to the founding team, early investors, a treasury or future staking rewards, and they are released on a schedule.
Those releases are called token unlocks. When a big unlock happens, a large number of coins can reach the market at once. If demand doesn’t grow at the same speed, the extra supply can push the price down. A small circulating supply next to a large total supply is therefore a warning sign, not a bonus.
Burned tokens work the other way. When a project or protocol sends coins to an address nobody controls, they are permanently burned and removed from total supply. Some networks have a burn mechanism built in, so supply changes with usage.
Max supply and fixed supply caps
Max supply is the hard cap on how many coins can ever exist. Not every coin has one.
- Bitcoin has a fixed supply cap of 21 million. New coins are issued as mining rewards that are cut in half roughly every four years in an event called the halving. That predictable, shrinking issuance is why people call Bitcoin “digital gold”.
- Ether has no maximum supply. New ETH is issued to validators, while part of each transaction fee is burned, so its supply can grow or shrink.
- Some tokens create their entire supply at launch and release it over many years, so the max supply is already reached but most of it isn’t circulating yet.
A max supply can help create scarcity, but it doesn’t guarantee value. A capped coin that nobody wants is still worth little. What a cap does give you is certainty: no one can quietly issue more.
Inflation rate
The inflation rate of a coin is how fast new issuance grows its supply each year. A coin with high supply growth needs rising demand just to keep its price steady. For Bitcoin, that rate falls with each halving; for other coins it depends on staking rewards, mining rewards or the unlock schedule.
How supply affects market cap and price
Supply turns a coin’s current price into its market cap. The basic formula is:
Market cap = current price × circulating supply
This is the crypto version of a company’s share price times its outstanding shares. It is why a coin priced at €0.10 is not automatically cheaper than one priced at €1,000: with a much larger supply, the first one can still be worth more in total.
A related figure is fully diluted valuation (FDV), which multiplies the price by the max supply (or total supply, if there is no cap). It shows what the market cap would be if every token were already circulating.
An example in euros
Say a token trades at €2. It has a circulating supply of 100 million and a max supply of 1 billion.
- Market cap: €2 × 100 million = €200 million.
- FDV: €2 × 1 billion = €2 billion.
Only 10% of the tokens are in circulation. If the next token unlocks release another 100 million, circulating supply doubles. For the price to stay at €2, buyers have to absorb €200 million of new tokens. If they absorb only half that, the price could fall towards €1.50 or lower. That simple sum is why the gap between market cap and FDV says a lot about future selling pressure. Our page on market cap goes into more detail.
Does a lower supply mean a higher price?
A lower supply doesn’t automatically mean a higher price. Price depends on supply and market demand together. A coin with a high supply, with tens or hundreds of billions of tokens, simply has a lower price per coin for the same market cap. A coin with a lower circulating supply only benefits if demand holds up when its locked tokens arrive.
What a fixed or slowly growing supply does is leave little room for dilution. That is why many investors look less at the number of coins and more at how the supply changes over time: new issuance, unlocks and burns.
Why supply matters to you
Supply figures help you make informed decisions instead of guessing from the price per coin. Before you buy a token, check three things:
- The gap between circulating and total supply. A big gap means a lot of supply is still to come.
- Who holds the locked tokens. Large allocations to the team and early investors can mean heavy selling when they unlock.
- The unlock and issuance schedule. Projects usually publish it in their documentation.
In the EU, a token offered to the public generally needs a white paper under MiCA, which describes the token and the offer. Together with the project’s own documents, it is a good place to check how many tokens were sold in a public sale and how the rest are allocated. Our page on tokenomics covers the wider design of a token’s economy.
Supply data is less useful for short term trading, where sentiment moves prices far more. But for anyone thinking about long term value, it is one of the key points to check.
The bottom line
Supply in crypto is measured three ways: circulating supply (what trades now), total supply (what exists, including locked tokens) and max supply (the most that can ever exist). A low price per coin means nothing without the supply behind it. Look at the gap between market cap and FDV, and at upcoming token unlocks, before you buy.
Questions people ask
Does Bitcoin have a max supply?
Yes. Bitcoin's code caps the supply at 21 million coins. New bitcoins are created as block rewards that halve roughly every four years, so the last fractions are expected to be mined around the year 2140.
Is a high circulating supply bad for a crypto?
Not by itself. A large supply just means a lower price per coin for the same market cap. What matters more is how fast new supply is added and how much is still locked.
What does 100% circulating supply mean?
It means every coin that will ever exist is already in circulation, so there are no token unlocks or new issuance left to dilute holders. Few cryptocurrencies are in that position.
Which crypto has no max supply?
Ether (ETH) is the best-known example. It has no fixed cap; new ETH is issued as staking rewards while part of every transaction fee is burned, so the supply can rise or fall over time.
Where can I check a coin's supply?
Data sites such as CoinMarketCap and CoinGecko show circulating, total and max supply for most coins. For newer tokens, also read the project's own documents and, in the EU, its MiCA white paper.