How this data works
Total crypto market cap is the combined value of every cryptocurrency in circulation. For each asset it is the circulating supply multiplied by the current price, and the market cap is the sum of those values across all assets. It is the single broadest measure of how much capital sits inside the asset class, which is why it is the number people reach for when asking whether crypto as a whole is growing or shrinking.
The figures here come from CoinGecko’s public API. The live headline number is polled directly and refreshes continuously; the historical series is rebuilt daily by summing the market caps of the largest assets, which together account for roughly 97% of the market. CoinGecko’s own total-history endpoint is a paid product, so deriving the total from its constituents is the honest way to show a free, long-run series — the small gap is the long tail of thousands of micro-cap tokens that would not visibly change the shape of any chart on this page.
Why quarterly, and why a log scale
Crypto is noisy daily and comprehensible quarterly. A quarter is long enough to strip out the weekend gaps and single-headline spikes, and short enough to show a cycle turning. Reading the chart quarter by quarter makes the four-year rhythm visible in a way a daily line never does.
The log scale matters just as much. The market has grown from under $2 billion in 2013 to trillions, so on a linear axis the entire first four years is a flat smear along the bottom and the only thing you can see is the most recent cycle. A logarithmic axis gives equal visual weight to a doubling whenever it happened, which is the only fair way to compare 2013 to today. Switch the toggle to linear and the distortion is obvious immediately.
Reading the cycle channel
The dotted lines are a trend channel fitted through the market’s cycle highs and lows. The method is deliberately simple: a quarter counts as a swing high or low if it is the highest or lowest point within four quarters either side, and a least-squares line is fitted through each set in log space, then projected four quarters forward.
That projection is a description of where the historical channel would sit if the existing trend continued — it is not a forecast, and nothing on this page should be read as a prediction or as investment advice. Trend channels break. The value is in seeing whether the market is currently trading near the top of its historical range, near the bottom, or somewhere unremarkable in between.
What dominance actually tells you
Bitcoin dominance is bitcoin’s share of the total market cap. Rising dominance usually means capital is consolidating into the largest, most liquid asset — often during risk-off periods or early in a recovery. Falling dominance means money is rotating outward into smaller assets, the pattern people label an “altcoin season.” It is a measure of distribution inside the market, not of the market’s direction: dominance can rise while everything falls.
The stablecoin band is worth watching for the opposite reason. Stablecoins are capital parked inside crypto but out of risk, so a growing stablecoin share often reflects dry powder waiting rather than money leaving.
For the cycle context behind these numbers, see our work on where the bitcoin bottom sits, on whether the four-year cycle is dead, and on the macro forces repricing every asset.
Frequently asked questions
How is total crypto market cap calculated?
Each asset’s market cap is its circulating supply multiplied by its current price, and the total is the sum across all assets. The figure on this page is derived by summing the largest assets by market cap, which represent roughly 97% of the market — the remaining fraction is thousands of micro-cap tokens.
What was the highest crypto market cap ever?
The all-time high shown above is the highest quarter-end total in our series, along with the quarter it occurred in. Because the number is measured at quarter end rather than at the intraday peak, a brief spike inside a quarter can be higher than the figure recorded here.
What percentage of the crypto market is Bitcoin?
That is bitcoin dominance, shown live above and charted over time on this page. It has ranged from over 90% in crypto’s early years to under 40% at the height of altcoin cycles, and it moves as capital rotates between bitcoin and the rest of the market.
Which quarter has historically been best for crypto?
The quarterly returns grid on this page shows every quarter since 2013 coloured by its percentage change, so seasonal patterns are visible directly. Historically Q4 has produced several of the largest gains, though the sample is small and one strong cycle can dominate the average — we look at this in more depth in market seasonality explained.
Why use a logarithmic scale for crypto market cap charts?
Because the market has grown by more than a thousandfold. On a linear axis every year before 2017 is compressed into an invisible line at the bottom of the chart. A log axis shows percentage moves at a consistent visual size, so a doubling in 2015 looks the same as a doubling today — which is what makes the cycles comparable.
How often does this page update?
The headline total refreshes live from CoinGecko while the page is open. The historical charts, dominance and asset breakdown are rebuilt once a day.