Guide
What Is the Crypto Fear & Greed Index? Understanding Market Sentiment
The bottom line: a 0–100 gauge of the market's "mood"
The Crypto Fear & Greed Index is an indicator that expresses investor sentiment in the cryptocurrency market as a number from 0 to 100. It's provided by Alternative.me, where a reading closer to 0 means "Extreme Fear," and a reading closer to 100 means "Extreme Greed." Rather than tracking price itself, it visualizes the market's "mood" — making it a useful complement to how to read the market.
Key points of this article
- A scale of 0–100. Lower means fear, higher means greed.
- The provider is Alternative.me (its crypto version is the one widely referenced).
- Calculated from several factors, including volatility, trading volume, social media, dominance, and trends.
- It's a reference gauge of sentiment — it does not tell you when to buy or sell.
A rough guide to the scale
| Numeric range | Classification (rough guide) |
|---|---|
| 0–24 | Extreme Fear |
| 25–49 | Fear |
| 50 | Around Neutral |
| 50–74 | Greed |
| 75–100 | Extreme Greed |
Category labels follow the provider's own display.
What is it calculated from?
According to Alternative.me, the crypto version of the index is calculated mainly by combining factors like the following.
- Volatility: the size of price swings (sharp moves are treated as a sign of fear).
- Market momentum / volume: the relationship between buying momentum and trading volume.
- Social media: the volume of mentions and reactions on social platforms (overheating is treated as a sign of greed).
- Dominance: changes in Bitcoin dominance.
- Trends: shifts in interest, such as Google search activity.
Cautions on how to use it
This index is meant to give you a rough sense of whether the market currently leans toward fear or greed. A low or high reading is not, in itself, a buy or sell signal. Just as with how to read the news, it's important not to rely on a single indicator, but to cross-check multiple sources of information. On-chain data such as large-holder ("whale") movements between wallets and exchanges is another commonly watched signal that isn't about mood at all — see What Is a Bitcoin Whale?.
The gauge is a reference; the decision is yours
The Fear & Greed Index is only a rough guide to sentiment. Mechanically deciding "it's fear, so buy" or "it's greed, so sell" is dangerous.
Frequently asked questions
Q. What is the Fear & Greed Index? A. It's an indicator that expresses crypto market sentiment on a scale of 0 to 100. 0 means extreme fear, and 100 means extreme greed.
Q. Who provides this indicator? A. The crypto version provided by Alternative.me is the one widely referenced.
Q. Can I use this index to decide when to buy or sell? A. No. It's only a reference for sentiment, not a trading signal. Use it alongside other information when making decisions.
Sources
- Crypto Fear & Greed Index (Alternative.me): https://alternative.me/crypto/fear-and-greed-index/
- Crypto Fear and Greed Index (CoinMarketCap): https://coinmarketcap.com/charts/fear-and-greed-index/
A note on investing
This article is for informational purposes only and does not constitute investment advice. Bitcoin carries risks including price volatility, hacking, and loss. Make investment decisions at your own responsibility and only with money you can afford to lose. Tax rules and regulations can change, so always confirm the latest details with official primary sources.
Sources
FAQ
- What is the Fear & Greed Index?
- It's an indicator that expresses crypto market sentiment on a scale of 0 to 100. 0 means extreme fear, and 100 means extreme greed.
- Who provides this indicator?
- The crypto version provided by Alternative.me is the one widely referenced.
- Can I use this index to decide when to buy or sell?
- No. It's only a reference for sentiment, not a trading signal. Use it alongside other information when making decisions.
This article is informational only and is not financial, investment, or trading advice. Prices are reference snapshots and may be outdated. Always do your own research.
