Last updated: October 2026
The Crypto Fear and Greed Index is a single number from 0 to 100 that summarizes how nervous or euphoric the crypto market is. Zero means extreme fear, 100 means extreme greed. The best-known version, published daily by Alternative.me, blends Bitcoin volatility, trading momentum, social media activity, Bitcoin dominance and search interest. Used well, it is a quick check on whether you are about to buy or sell for emotional reasons. Used badly, it is a timing signal that can be early by months. This guide shows how it is built, what the numbers mean, and how to use them.
Key takeaways
- The index measures crowd mood, mostly around Bitcoin. It does not measure value or predict when a trend ends.
- Readings below 25 (extreme fear) have often lined up with good long-term entry zones, but fear can persist for months while prices drift or retest their lows, as they did between February and June 2026.
- The most practical use is to tilt a plan you already have, such as buying a little more during fear or trimming during greed, rather than to trigger all-in trades.
- Different providers (Alternative.me, CoinMarketCap and others) use different inputs, so their scores can disagree on the same day.
How the Crypto Fear and Greed Index Is Calculated
Alternative.me publishes the weightings behind its index. Each input is scored, normalized to the 0–100 range and combined. The table summarizes the published methodology.
| Component | Weight | What pushes the score toward fear |
|---|---|---|
| Volatility | 25% | Bitcoin’s current volatility and drawdowns rising above their 30- and 90-day averages |
| Market momentum / volume | 25% | Weak buying volume compared with recent averages |
| Social media | 15% | Lower engagement and slower interaction rates on crypto posts |
| Surveys | 15% | Pessimistic poll responses (this input has been paused for long stretches) |
| Bitcoin dominance | 10% | Rising BTC share of total crypto market cap, read as a flight out of altcoins |
| Google Trends | 10% | Search patterns such as rising “bitcoin crash” queries |
Two details matter for interpretation. First, half the weight (volatility plus momentum) comes from Bitcoin’s own price action, so the index partly restates what the chart already shows. Second, the dominance input reflects a specific assumption: when traders get scared they rotate into Bitcoin. That is often true, but not always. Our Bitcoin dominance guide explains when that relationship breaks.
Other versions of the index
CoinMarketCap and several exchanges and data sites publish their own fear and greed indicators. They use different inputs (some include options market data or a wider basket of coins), so a score of 30 on one site and 41 on another is normal. Pick one source and stick with it, because the useful information is in the trend and the extremes, not in the exact number.
What Each Score Range Means
| Score | Label | What the market usually looks like | Common mistake at this level |
|---|---|---|---|
| 0–24 | Extreme fear | Sharp drawdowns, liquidations, gloomy headlines, low social engagement | Selling long-term holdings to “stop the pain” |
| 25–46 | Fear | Choppy or falling prices, cautious buyers | Assuming any fear reading is automatically a bottom |
| 47–54 | Neutral | No strong emotional bias | Reading meaning into small daily moves |
| 55–75 | Greed | Steady rally, rising volume and search interest | Adding leverage because “everyone is making money” |
| 76–100 | Extreme greed | Parabolic moves, retail inflows, memecoin mania | Treating the reading alone as a reason to short |
The band edges vary slightly by provider; Alternative.me’s labels follow roughly these ranges. Small daily changes of a few points are noise. A move from 70 to 20 inside a week is a signal that sentiment has flipped.
A Real Example: Extreme Fear Is Not the Same as the Bottom
The 2025–2026 market is a useful lesson. Bitcoin set its all-time high of about $126,000 on 6 October 2025, then fell to a low near $60,000 in February 2026. That month, Alternative.me’s index printed 5, the lowest reading in its history. Reports date the first reading of 5 to between 6 and 12 February, and it touched 5 again later in the month. Record fear arrived close to the February low, but it didn’t mark a turn. Prices chopped for months without recovering, briefly dipped to about $59,000 in June 2026, and sentiment slid back into fear during that dip. Anyone who treated “record fear” as an all-clear signal to go all in had to sit through four more months of losses and a retest of the low.
That does not make the index useless. Buyers who spread purchases across those months of fear generally built positions at much lower average prices than those who bought during the extreme greed of late 2025. The lesson is that extreme fear marks a zone where long-term risk and reward improve, not a day to go all in. Our crypto bear market survival guide covers how to pace yourself through that kind of stretch.
Five Practical Ways to Use the Index
1. Tilt your dollar-cost averaging
If you already buy a fixed amount on a schedule, the index can adjust the size. A simple rule many investors use:
Sentiment readings work best alongside other signals, and our article asking is the crypto bull run over shows how to combine them when deciding whether a cycle has peaked.
- Score below 25: buy 1.5x your normal amount.
- Score 25–74: buy your normal amount.
- Score 75 or above: buy 0.5x, or pause and hold the cash.
Worked example: with a $200 weekly plan, a week at a reading of 12 means $300, a week at 50 means $200 and a week at 82 means $100. Over a full cycle, this pushes more of your money into cheaper periods without requiring you to call the bottom. Set the rule in advance and write it down. See our dollar-cost averaging guide for the base strategy.
2. Use extreme greed as a rebalancing reminder
When the index sits above 75 for several weeks, check whether your crypto allocation has drifted above your target. If a 10% target has grown to 20% of your net worth, trimming back is a risk decision, not a prediction. The index is simply the prompt to look.
3. Check your own behavior against it
Before placing an impulsive trade, look at the score. If you want to sell everything and the index reads 8, or you want to borrow to buy more and it reads 88, you are probably reacting to the same emotions the index is measuring. Waiting 24 hours before acting is a cheap filter.
4. Watch for divergences
The more useful signals are often mismatches. Price making a new low while the index is higher than at the previous low suggests panic is fading. Price making a new high while the index fails to reach extreme greed can mean the rally is running on fewer participants. Confirm divergences with chart tools such as the RSI indicator rather than acting on sentiment alone.
5. Put it in cycle context
Extreme greed in the first months after a long bear market means something different from extreme greed after a two-year rally. Read the score alongside where the market is in its broader cycle; our market cycles explainer outlines the typical phases.
Limitations You Should Know
- Bitcoin-centric: The inputs mostly track BTC. An altcoin or memecoin can be collapsing while the index reads neutral.
- Lagging by design: Volatility and momentum are measured over past windows, so the index confirms moves more than it anticipates them.
- Extremes can last: In strong trends the index can sit in extreme greed or extreme fear for weeks.
- Input changes: Components such as surveys have been paused, and social platforms change their data access, which can shift readings without any change in the market.
- Not a backtest-ready strategy: The history is relatively short and covers only a few full cycles, so be cautious of anyone claiming a precise win rate for “buy at X, sell at Y.”
How to Check the Index
- Alternative.me: The original daily index with a historical chart. It updates once a day, so intraday crashes may not show until the next update.
- Free API: Alternative.me offers a simple public endpoint that returns the latest value and history, which spreadsheet users and bot builders often pull into their own dashboards.
- CoinMarketCap and data platforms: Alternative versions with different inputs, handy as a cross-check.
Whichever you use, log the reading next to each buy or sell in your trading journal. After a year you will see whether your decisions cluster around emotional extremes. That is often more useful than the index itself.
The index is one input in a wider toolkit. Our crypto trading guides hub shows where sentiment fits alongside charts, indicators and risk management.
FAQ
Where can I check the Crypto Fear and Greed Index?
Alternative.me hosts the most widely quoted version and updates it daily, with a free historical chart and API. CoinMarketCap and several exchanges publish their own versions using different inputs. Scores between providers often differ by several points, so compare like with like and focus on the trend and extremes rather than the exact figure on a given day.
Is the Fear and Greed Index reliable for timing trades?
Not on its own. It describes current mood and is partly built from past price action, so it lags. In February 2026 it hit a record low of 5 near Bitcoin’s low of about $60,000, yet prices didn’t recover for months and briefly dipped to about $59,000 in June. It works best as context for a pre-set plan, such as scaling purchases during fear or reviewing risk during greed, combined with chart and on-chain analysis.
What is a good score to buy crypto?
There is no magic number. Readings under 25 have historically offered better long-term entry zones than readings above 75, but extreme fear can persist while prices drop further. A practical approach is to buy in stages across fearful periods instead of picking one day, and to size purchases so you could keep buying if prices fell another 30–50%.
Does the index work for altcoins?
Only loosely. Most inputs are Bitcoin-based, so it reflects overall market sentiment rather than any single altcoin. Altcoins tend to fall harder during fear and rally harder during greed, but a specific token can diverge completely because of its own news, unlocks or liquidity. Do token-level research separately.
Crypto is volatile and risky; this is education, not financial advice. Do your own research.
