Crypto Fear & Greed Index Explained: How to Read It
What the index is
The Crypto Fear & Greed Index, published by Alternative.me, compresses overall crypto market sentiment into one number from 0 to 100. Readings near 0 mean extreme fear; readings near 100 mean extreme greed. GasNow displays the latest value with its label and keeps a history of recorded readings on the Fear & Greed page.
The scale
The labels run from Extreme Fear at the bottom of the scale, through Fear, Neutral and Greed, to Extreme Greed at the top. The midpoint of 50 is neutral. GasNow shows the label exactly as the publisher assigns it, next to the number.
What goes into it
The index combines several observable signals about Bitcoin and the wider market: price volatility compared with recent averages, market momentum and trading volume, social media activity and engagement, Bitcoin's dominance of total market capitalization, and search trends. Sharp drawdowns with rising volatility push the index toward fear; strong rallies with heavy volume and social buzz push it toward greed.
How traders use it
The most common use is contrarian. The idea, often summarized as "be fearful when others are greedy", is that extreme greed often coincides with crowded, overextended markets, while extreme fear often coincides with capitulation and better long-term entry prices. Others use it as a simple risk dial: lower position sizes when the index is euphoric, and look for opportunities when it has been in extreme fear for a while.
Limitations
- It is a summary of what already happened, not a forecast. The index can stay in extreme greed for weeks during a strong bull market.
- It is heavily Bitcoin-centric and does not describe each altcoin.
- Its inputs are partly sentiment-based, which can be noisy.
Pair it with structural indicators
Sentiment tells you how participants feel. Structural data tells you how they are positioned. GasNow places the Fear & Greed Index next to its Market Stress Index, built from derivatives funding, open interest, volatility and stablecoin flows. When greed is extreme and leverage is elevated at the same time, the market is more fragile than either number suggests alone.
Frequently asked questions
Who publishes the Crypto Fear & Greed Index?
Alternative.me publishes it. GasNow displays the latest value and keeps its own recorded history.
Is extreme fear a buy signal?
It is often read as a contrarian signal, but it is not a forecast. Markets can stay fearful for long periods. Use it with other indicators and your own risk management.