FUNDAMENTALS OF CRYPTO

What is Market Capitalisation in Crypto?

If you’ve spent any time researching cryptocurrencies, you’ve almost certainly come across the term “market capitalisation”, or “market cap” as it’s commonly referred to. It appears on every major crypto data platform, sits front and centre on coin listings, and gets thrown around constantly in market discussions. But what does it actually mean? And more importantly, why should you care about it as an investor?

Let’s break it down properly.

The Simple Definition

Market capitalisation in crypto refers to the total value of a cryptocurrency in circulation at any given point in time.

It’s calculated using one straightforward formula:

Market Cap = Current Price × Circulating Supply

So if a cryptocurrency is trading at $10.00 AUD and there are 50 million coins in circulation, its market cap is $500 million AUD. That’s it. No complicated maths required.

What market cap gives you is a snapshot of the overall size of a cryptocurrency.. not just its price. This distinction is critical, and it’s one that catches out a lot of investors who are newer to the space.

Price vs. Market Cap: Why Price Alone is Misleading

This is one of the most common traps in crypto. Investors see a coin priced at $0.002 AUD and think, “This is cheap – if it gets to even $1.00, I’ll make a fortune.” But price on its own means absolutely nothing without context.

Here’s a practical example:

Coin A is priced at $0.05 AUD with 100 billion coins in circulation. Its market cap is $5 billion AUD.
Coin B is priced at $500 AUD with 1 million coins in circulation. Its market cap is $500 million AUD.

Coin B has a higher price per coin but a significantly smaller market cap. Coin A would need to grow its total value tenfold just to match where Coin B currently sits.

If you only looked at price, you’d think Coin A was the “cheaper” option with more upside. When you factor in market cap, you get a far more accurate picture of where each coin actually stands in terms of overall market size and growth potential.

Market cap is the lens that gives price its context.

The Three Market Cap Categories

Within the crypto industry, coins and tokens are broadly grouped into three market cap tiers. Understanding these tiers helps you assess risk and opportunity before you make any decisions.

Large Cap (Generally Above $10 Billion AUD)

These are the heavyweights; think Bitcoin (BTC) and Ethereum (ETH). Large cap Altcoins are the most established, the most liquid, and generally the most widely recognised. They’ve survived multiple market cycles, carry significant institutional interest, and tend to be the most stable relative to the rest of the crypto market (though “stable” in crypto is always relative).

For investors prioritising security and longevity, large cap assets are typically where the foundation of a portfolio sits.

Mid Cap (Roughly $1 Billion to $10 Billion AUD)

Mid cap cryptocurrencies sit in the middle ground. They’ve established themselves beyond the speculative early stages, but they still carry considerably more risk than large caps. The flip side is that they also carry more growth potential. These coins have often proven a use case or built a community, but haven’t yet reached mainstream adoption.

Mid cap assets can offer compelling opportunities, but they require a greater level of research and a stronger stomach for volatility.

Small Cap (Below $1 Billion AUD)

Small cap cryptocurrencies are where you find the highest risk and, potentially, the highest reward. Many of these projects are early-stage, experimental, or still trying to find product-market fit. Some will become significant players in the space. Most won’t.

Small cap assets are highly speculative, can be significantly more vulnerable to price manipulation, and are generally far less liquid than their larger counterparts. If you’re investing in this space, you need to do your homework thoroughly.. and size your positions accordingly! We have a resource on understanding risk management you should check out.

What Market Cap Tells You (and What It Doesn't)

Market cap is a useful tool, but it’s not the whole story. Here’s how to use it correctly.

What it tells you: the relative size of a cryptocurrency compared to others in the market, a broad indication of risk, how much total capital would theoretically need to flow in for a coin to reach a certain value, and where a coin sits in the broader market hierarchy.

What it doesn’t tell you: whether a project is fundamentally strong, future price performance, the quality of the team or technology behind the project, or whether a coin is overvalued or undervalued.

Market cap should always be one metric in your research toolkit, but not the only one. Pair it with an understanding of the project’s fundamentals, tokenomics, team, and real-world utility before drawing any conclusions. Visit our full resource on how to spot a winning Altcoin project here.

Circulating Supply, Total Supply, and Fully Diluted Market Cap

To get a complete picture, you also need to understand a few related terms that directly affect how market cap is interpreted.

Circulating Supply is the number of coins or tokens currently available and actively trading in the market. This is what’s used in the standard market cap calculation.

Total Supply refers to all coins that currently exist; including those that are locked, reserved, or not yet in circulation.

Max Supply is the maximum number of coins that will ever exist. Bitcoin, for example, has a hard cap of 21 million coins. This scarcity is a fundamental part of Bitcoin’s value proposition.

Fully Diluted Market Cap (FDV) takes the current price and multiplies it by the maximum possible supply; as if every coin that will ever exist was already in circulation. This gives you a forward-looking view of what the market cap could look like if and when all tokens enter circulation.

FDV matters because some projects have enormous token reserves that haven’t yet hit the market. If a project has a modest circulating supply right now but a massive total or max supply, the price, and therefore the market cap could face significant downward pressure as more tokens unlock and enter circulation over time.

Always check the tokenomics. Market cap based on circulating supply alone can paint a rosier picture than what the fully diluted figures reveal.

Total Market Cap: Reading the Bigger Picture

Beyond individual coins, the total crypto market cap is the combined value of every cryptocurrency in existence. This figure is widely used as a barometer for the overall health and sentiment of the crypto market.

When the total market cap is climbing, it generally signals that capital is flowing into crypto; investors are buying, confidence is up, and market sentiment is bullish. When it’s contracting, capital is exiting the space and sentiment is turning bearish.

Tracking the total market cap alongside Bitcoin‘s market dominance; the percentage of total crypto market cap held by Bitcoin alone gives you a useful read on where the market cycle might be. Historically, when Bitcoin dominance drops significantly, it often signals that capital is rotating into altcoins. When Bitcoin dominance rises sharply, it can indicate a risk-off environment where investors retreat to the relative safety of the largest asset in the space.

Key Takeaways

Market capitalisation is one of the foundational metrics in crypto investing. Here’s what to walk away with:

Market cap equals price multiplied by circulating supply; it measures the total size of a cryptocurrency, not just its price. Never assess a coin based on price alone. Large, mid, and small cap assets each carry different risk profiles and growth expectations. Fully diluted market cap gives you a more complete picture than circulating supply figures alone. And the total crypto market cap is one of the best high-level indicators of overall market health and sentiment.

Market cap won’t tell you everything, but understanding it properly puts you well ahead of the majority of people entering this space.

WRITTEN & REVIEWED BY Chris Shepley

UPDATED: MARCH 2026