BTC dominance measures how much of the crypto market’s total value sits in Bitcoin. Traders use it as a regime indicator: whether capital is concentrating in Bitcoin or spreading into altcoins. On its own it says nothing about direction; it is read together with Bitcoin’s price and the total market cap.
How it’s calculated
BTC dominance (%) = Bitcoin market cap ÷ total crypto market cap × 100
where market cap = price × circulating supply. The total includes stablecoins unless a provider publishes a variant that excludes them.
A common reading grid:
| BTC price | BTC dominance | Typical interpretation |
|---|---|---|
| Rising | Rising | Bitcoin leading the market |
| Rising | Falling | Altcoins outperforming |
| Falling | Rising | Risk-off; altcoins falling harder |
| Falling | Falling | Broad weakness, or capital moving to stablecoins or altcoins |
These are tendencies, not rules.
Example
Bitcoin’s market cap is $1.2 trillion and the total crypto market cap is $2.0 trillion.
- Dominance = 1.2 ÷ 2.0 × 100 = 60%
A month later, Bitcoin’s cap is $1.26 trillion (+5%) and the total is $2.25 trillion (+12.5%).
- Dominance = 1.26 ÷ 2.25 × 100 = 56%
Bitcoin rose, but the rest of the market rose faster. Before concluding that altcoins are leading, check whether part of the $250 billion increase came from stablecoin supply rather than price gains.
Common mistakes
- Treating dominance as a buy or sell signal. It describes relative performance, not direction.
- Ignoring stablecoins. In sell-offs, stablecoin market cap often holds steady while everything else falls, which pushes dominance around for reasons unrelated to Bitcoin.
- Comparing numbers from different sources. Use one provider consistently.
- Applying it to every altcoin. A falling dominance can coincide with a handful of large-cap coins rising while most small caps fall.
- Forgetting sentiment. Shifts in dominance often follow narratives; pair it with market sentiment and funding rates.
See how to read a Bitcoin chart for the price side.
In SnapPulse
When you scan a crypto pair, SnapPulse automatically attaches Bitcoin regime context to the analysis, and its live X sentiment check compares crowd narrative with the technical read. Download SnapPulse.
Educational content — not financial advice.
Updated