Convert BTC, ETH, SOL and 15 other cryptos to USD, EUR and BRL in real time.
The definition and why it matters
Market capitalization equals price × circulating supply. It approximates the total value the market currently assigns to a cryptoasset and is the default ranking metric on CoinGecko, CoinMarketCap, TradingView, and every terminal built for the crypto market.
Unlike equities, where share counts are audited and stable, crypto supply changes continuously via token unlocks, burns, emissions, and slashing events. Market cap is therefore a moving target, and reading it without its accompanying supply metrics invites confusion.
Circulating, total, and max supply
These three numbers tell three different stories. Circulating supply is what the market currently trades; total supply includes locked, staked, or escrowed tokens that exist but are not yet freely tradable; max supply is the protocol cap, if any.
- Circulating supply: coins freely available for trading right now
- Total supply: circulating + locked/staked/vesting tokens (excluding burned)
- Max supply: hard cap defined by the protocol (21M for BTC, undefined for ETH, 10B for SOL)
- Fully diluted valuation (FDV): price × max (or total) supply
Fully diluted valuation and unlock schedules
FDV answers the question: "If every token that will ever exist were trading today at the current price, how much would the project be worth?" For tokens with significant vesting schedules, FDV can be 5–20x market cap.
When large tranches unlock, circulating supply jumps and, absent offsetting demand, sell pressure follows. Reading market cap alongside a public unlock schedule (Token Unlocks, CryptoRank, or the project’s own tokenomics page) is essential for any token less than two years old.
Why market cap can mislead
A penny-priced token with a trillion-token supply and a dollar-priced token with ten billion tokens can have the same market cap. "Low unit price" is not low valuation — a common misconception behind the "this coin is cheap because it costs $0.01" trap.
Thin order books also distort market cap. Marking 1% of supply to a price that only appeared because 10,000 tokens crossed at that level implies far more market capacity than actually exists. Liquid market cap, which discounts illiquid float, is a better sanity check.
Ranking and dominance
Bitcoin dominance (BTC market cap ÷ total crypto market cap) is a widely watched macro ratio. Historically it sits between 40% and 70% and tends to rise during bear markets (flight to quality) and fall during altcoin-led phases of a bull cycle.
Large-cap (top 10), mid-cap (11–100), and small-cap tiers behave differently across cycles. Mid-caps often outperform during risk-on phases but draw down harder in corrections, while the top three rarely change places.
Beyond market cap: better metrics
Market cap is a blunt instrument. For evaluating a protocol, these metrics usually provide more signal:
- Total Value Locked (TVL): capital committed to a protocol’s contracts
- Network value to transactions (NVT): market cap ÷ on-chain transaction volume (Bitcoin analog of P/E)
- Price-to-sales for DeFi: market cap ÷ annualized protocol revenue
- Active addresses / daily active users: adoption proxy
- Realized cap: weighted sum of each coin’s last-moved price (less noisy than market cap)
Reading a data dashboard responsibly
When evaluating a new token, always check four numbers together: market cap, FDV, circulating-supply ratio (circulating ÷ max), and 24-hour volume. A healthy liquid asset typically trades 5–20% of its market cap daily; less than 1% volume suggests illiquidity, more than 50% suggests a short-lived speculative flare.
Cross-reference two data aggregators. Discrepancies in supply (especially for new tokens) are common and usually expose where one source is using stale or manually updated data.
Founder of UtilizAí, with a background in Blockchain, Cryptocurrencies and Finance in the Digital Era, plus complementary studies in Theology, Philosophy and ongoing coursework in Speech-Language Pathology. Learn more.
Frequently asked questions
Why are market cap and FDV so different for some tokens?
Tokens with long vesting schedules have a small circulating supply at launch, so market cap looks modest. But the total supply that will eventually hit the market is much larger, and FDV reflects that future reality. A 20× FDV/market-cap ratio is a warning sign: future unlocks will dilute holders unless demand grows proportionally.
Is market cap the same as "money in the system"?
No. Market cap is price times supply, not the total capital invested. Only a small share of coins trade in any window; moving the marginal price moves the entire cap up or down. Some estimates suggest every $1 of net inflow into the crypto market moves market cap by several dollars.
Which supply number should I use for market cap?
Use circulating supply for market cap and max (or total) for FDV. If a project does not publish a max supply, use total supply as the FDV ceiling and note that inflation could change it.
How do burns affect market cap?
Burns remove tokens from total supply permanently. If the burn is from circulating supply, market cap falls mechanically unless the price rises to offset. If the burn is of previously locked tokens, FDV falls but market cap may be unchanged in the short term.
What is realized cap?
Realized capitalization sums each UTXO (or address) by the price it last moved at, rather than the current price. It dampens the weight of old, dormant coins and tends to give a more stable measure of "money actually at work" than raw market cap.
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