Where these numbers come from
The total crypto market cap is the sum of every crypto asset’s circulating supply multiplied by its price. It is the broadest single gauge of how much money is held in the asset class.
The data on this page comes from CoinGecko’s free public API. The headline figure is CoinGecko’s global total market cap: the site refreshes it every day, and it also updates live in your browser. The quarterly history is rebuilt daily by adding up the market caps of the largest assets, which together make up roughly 97% of the market, so the historical totals sit slightly below the headline figure. The remainder is a long tail of very small tokens that would not change the shape of any chart here.
Why the chart is quarterly and logarithmic
Daily crypto prices are noisy. Quarter-end values smooth out single-day spikes while still showing when a cycle turns.
The market has grown from a few billion dollars to trillions, so a normal (linear) axis squeezes the early years into a flat line. A logarithmic axis shows a doubling at the same size whenever it happened, which makes different periods comparable. You can switch between the two views on the chart.
The dotted channel
The dotted lines are a simple trend channel drawn through past quarterly highs and lows and extended four quarters ahead. A quarter counts as a high or low if it is the extreme within four quarters on either side, and a straight line is fitted through each set on the log scale.
The channel describes the past range. It is not a forecast, and nothing on this page is investment advice.
Dominance and stablecoin share
Bitcoin dominance is Bitcoin’s share of the total. It tells you how value is spread across the market rather than which way the market is heading: dominance can rise while prices fall. The stablecoin share shows how much of the market sits in dollar-pegged tokens, money that is in crypto but not exposed to price swings.
Frequently asked questions
How is the total crypto market cap calculated?
Each asset’s market cap is its circulating supply times its current price. The total adds those values together. Here it is calculated from the largest assets, which account for roughly 97% of the market.
What is the highest the crypto market cap has been?
The all-time high shown above is the highest quarter-end value in this data, with the quarter it was set. Because it uses quarter-end values, a short spike within a quarter could have been higher.
What share of the crypto market is Bitcoin?
That is Bitcoin dominance, shown live above and charted over time on this page.
How often is this page updated?
The headline total updates live while the page is open. The charts, dominance and asset breakdown are rebuilt once a day.