Crypto Market Heatmap
The whole market in one screen. Each tile is a coin, sized by market capitalisation and coloured by its move over the window you pick — the fastest way to see whether a rally is broad or carried by three names.
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Top 100 by market cap
3 minWhat to look for on the map
- Breadth. Count the green tiles, not the brightness. A market where 80 of the top 100 are up is in a different regime from one where six are up a lot.
- Divergence at the top. Bitcoin and Ethereum moving opposite to the rest of the board is the clearest visual signal of a rotation starting or ending.
- Clusters. When several coins in the same sector light up together — L2s, DeFi, memes — the flow is thematic rather than market-wide, and it usually has a shorter half-life.
- The stablecoin baseline. USDT and USDC should always be near-grey. If one of them shows real colour, something is wrong with a peg and that matters more than anything else on the screen.
How it is built
The top 100 assets by market capitalisation are laid out with a squarified treemap algorithm, which packs rectangles of the correct relative area while keeping each one as close to square as possible — that is what makes the tiles readable rather than long slivers.
Colour is a diverging scale centred on zero. Intensity saturates at ±10% for the 1-hour and 24-hour views and ±30% for the 7- and 30-day views, so a normal day still shows visible variation instead of a uniform wash.
Data refreshes every three minutes from CoinGecko, with CoinPaprika as a fallback if that request fails.
Frequently asked questions
What is a crypto heatmap?
A single view of the whole market where every coin is a rectangle. The size of each rectangle is proportional to market capitalisation, and the colour shows the price change over the period you pick — green for up, red for down, with intensity scaled to the size of the move. It answers "what is actually happening right now" faster than any table can.
How do I read the tile sizes?
Area is market capitalisation, so Bitcoin dominates the map by design. That is the point: it keeps a 400% move in a small-cap in proportion. If you want to see small caps clearly, sort by a shorter window where their moves are largest, or read the table under the map.
What time periods can I view?
One hour, 24 hours, 7 days and 30 days. The 1-hour view is useful for spotting a move as it happens; the 7- and 30-day views show which sectors are actually leading rather than which ones are having a loud afternoon.
Is a broad green map better than a narrow one?
Usually, yes. A rally where most of the board is green is being driven by market-wide flows. A map that is mostly flat with two or three bright tiles is a rotation into specific narratives, and those tend to reverse faster. Cross-check breadth against the altcoin season index.
Where does the data come from?
CoinGecko's public markets endpoint, with CoinPaprika as an automatic fallback, refreshed every three minutes. Stablecoins are shown but always sit near zero, which makes them a useful visual baseline for what "no move" looks like.