Data & Methodology
Every number on this site has a definition. Here is how each metric is computed, how the rankings are ordered and what each calculator assumes.
Last updated: October 2026
Update frequency
- Prices, market caps, volume and change: minute-level, the market endpoint is polled every 3 minutes.
- Rankings and the heatmap: the same cadence as the market endpoint — each page load takes the latest snapshot.
- Futures sentiment indicators: follow the upstream exchange's push cadence, usually also minute-level.
- The Fear & Greed Index and the altcoin season index update daily, so they do not change intraday.
- Every value is a snapshot taken when it was fetched, so the same page can show different numbers at different moments.
Metric definitions
- Market cap: circulating supply × latest price.
- 24-hour volume: total volume across aggregated sources over the past 24 hours — not the volume of any single venue.
- Turnover = 24-hour volume ÷ market cap. It measures capital activity and reflects trading heat better than raw volume.
- Change: 1-hour / 24-hour / 7-day figures are percentage moves against the start of each window. When data is missing the page shows “—” rather than a zero.
How the rankings are built
- Top: sorted by 24-hour volume, descending.
- Gainers / Losers: sorted by 24-hour change; the landing pages keep only coins moving up / down respectively.
- 7-day gainers / losers: sorted by 7-day change; the landing pages keep only coins with the matching sign.
- Turnover: sorted by 24-hour volume ÷ market cap, descending.
- Market cap: sorted by market cap, descending.
- Stablecoins: only fiat-pegged stablecoins, sorted by market cap.
- Stablecoins are excluded from the gainers, losers and top rankings — otherwise USDT would sit at the top of the board permanently.
How the heatmap works
- Block area = share of market cap, laid out with a squarified treemap so every block stays close to square.
- Block colour = 24-hour change — green for up, red for down — with the shade normalised against the largest move in the current view.
- You can switch between 25, 50 and 100 coins; by default the top 50 by market cap are shown.
- Hover or click a block to see that coin's price, change, market cap and volume underneath.
Calculator assumptions
- Every calculator is pure formula work: it talks to no trading API and never reads your account.
- Fees are deducted at the rate you enter; slippage is only modelled in the trading cost calculator.
- The calculators do not simulate exchange maintenance-margin tiers, funding fees or risk controls, so real fills will differ from the estimate.
- The bottom of every calculator page spells out that tool's full formulas and where its limits are.
Disclaimer
- The data and calculations on CoinRung are for reference only and are not investment advice, an offer or a promise.
- Crypto prices are extremely volatile and past data does not indicate future performance — make your own decisions and carry the risk.
- When a metric definition or a ranking rule changes, we update this page and the last-updated date at the top.