The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Bitcoin dominance (BTC.D) is Bitcoin’s share of the total cryptocurrency market capitalization tracked by a particular data provider. It can help describe how Bitcoin’s market value compares with the rest of that provider’s measured market, but it is not a direct measure of money moving between coins or a reliable stand-alone signal that altcoins are about to rally.
How Bitcoin dominance is calculated
The basic calculation is:
Bitcoin dominance = Bitcoin market capitalization ÷ total crypto market capitalization × 100%
Market capitalization is generally an asset’s price multiplied by its circulating supply. CoinMarketCap describes circulating market capitalization as based on an asset’s reference price and estimated circulating supply, and its aggregate market capitalization as the sum of market caps that meet its methodology. CoinGecko similarly defines a project’s market capitalization as price times circulating supply and calculates its global total from projects it tracks. See CoinMarketCap’s Bitcoin Dominance glossary, CoinMarketCap’s market-cap explanation, CoinGecko’s methodology and CoinGecko’s Bitcoin dominance guide.
Because providers can differ in the assets they track, supply estimates, prices and inclusion rules, their BTC.D readings may not match. Use the same provider when comparing readings over time, and check its methodology and chart settings.
#1 Best Overall
What a rising or falling BTC.D can—and cannot—tell you
When dominance rises
A rising BTC.D means Bitcoin’s market capitalization has increased relative to the measured total. It does not prove that investors sold altcoins to buy Bitcoin. The ratio may rise because Bitcoin’s market cap grew, other measured assets fell or grew more slowly, or the composition of the total changed.
When dominance falls
A falling BTC.D means Bitcoin represents a smaller share of the measured total. It does not, by itself, show that altcoins are gaining value in dollars or that a broad altcoin rally has begun. The ratio can fall because Bitcoin’s market cap declined, other assets’ market caps increased, or the denominator changed.
Rank #2
- Ideal for Gifting
- Ideal for a bookworm
- Compact for travelling
BTC.D is a relative market-cap ratio, not a record of trading flows. CoinGecko recommends reading its dominance chart alongside Bitcoin’s price; treat that as context, not a dependable forecast. For an altcoin you are considering, compare its performance with BTC and with a cash or stablecoin reference over the same timeframe.
Why stablecoins can change the signal
Stablecoins contribute to the total crypto market capitalization used in the denominator. Their market-cap growth can lower BTC.D even if speculative altcoins are not outperforming. In a risk-off period, investors may sell crypto assets for stablecoins; that shift can reduce Bitcoin’s measured share without showing increased appetite for riskier altcoins. CoinGecko discusses this denominator effect in its dominance guide.
Free tools Windows power users keep installed
One-click scans. No signup required.
How to compare BTC.D readings fairly
Before drawing a conclusion from a dominance chart, check what each reading actually measures:
- Provider and asset universe: Confirm which service supplied the figure and which assets it includes.
- Denominator: Check whether stablecoins and other asset categories are included.
- Date and timeframe: Compare readings from the same dates and chart intervals; market conditions and the measured universe can change.
- Metric: Make sure the chart shows Bitcoin’s share of total crypto market capitalization rather than a narrower altcoin measure.
- Relative performance: Compare Bitcoin’s price and the relevant altcoin or basket over the same period, including against a cash or stablecoin reference.
For historical context, CoinGecko’s Q2 2025 industry report says Bitcoin dominance reached 62.1% in that quarter. That is a provider-specific historical figure, not a current reading. BTC.D changes over time, so check the live chart before quoting or relying on a present-day percentage: CoinGecko’s Q2 2025 report.
Quick Recap
Best Value
- It can be a gift option
- Comes with secure packaging
- Helpful in various ways
Rank #4
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
