Hva er Crypto Fear & Greed Index Calculator?
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The Crypto Fear and Greed Index Calculator computes a composite sentiment score from 0 (extreme fear) to 100 (extreme greed) using weighted inputs including market volatility, trading momentum, social media sentiment, Bitcoin dominance, Google Trends search volume, and survey data. This index distills the emotional state of the cryptocurrency market into a single number, serving as a contrarian indicator: extreme fear often signals buying opportunities, while extreme greed often precedes corrections. The index is inspired by the CNN Fear and Greed Index for traditional stock markets but adapted for the unique characteristics of crypto markets, where sentiment swings are more extreme and retail participation is higher. The crypto market is particularly sentiment-driven because many assets lack traditional valuation metrics (earnings, dividends, book value), making price movements heavily dependent on narrative and emotion rather than fundamentals. The calculator deconstructs the index into its six component scores, allowing you to see which factors are driving the overall sentiment. During a sharp price drop, the volatility component might read extreme fear while social media sentiment remains neutral, suggesting that the fear is price-driven rather than narrative-driven. Conversely, during a speculative mania, social media and Google Trends might show extreme greed while volatility is low, indicating complacency. Historical analysis shows that the index has been a reliable contrarian signal at extremes. Periods where the index stayed below 20 (extreme fear) for more than two weeks have preceded average returns of 40-80% over the following 6 months. Periods where the index remained above 80 (extreme greed) for more than two weeks have preceded average drawdowns of 20-40%. The calculator provides this historical context alongside the current reading to help inform investment timing decisions.
Calkulon makes complex calculations simple — built for students and everyday problem-solvers.
Formel
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Fear and Greed Index = (Volatility Score x 25%) + (Momentum Score x 25%) + (Social Media Score x 15%) + (BTC Dominance Score x 10%) + (Google Trends Score x 10%) + (Survey Score x 15%)
Volatility Score = 100 - Normalize(Current 30d Volatility / Average 90d Volatility)
Momentum Score = Normalize(Current Price / 30d SMA and Volume / 30d Avg Volume)
Social Score = Normalize(Weighted Social Media Mentions and Sentiment)
Dominance Score = 100 - Normalize(BTC.D Change Over 30 Days)
Trends Score = Normalize(Google Search Volume for Bitcoin)
Worked example: Volatility score: 35 (moderately fearful, above-average volatility). Momentum: 55 (neutral, price near 30-day average). Social: 40 (slightly bearish sentiment). Dominance: 60 (BTC dominance rising = risk-off). Trends: 45 (moderate search interest). Survey: 50 (neutral). Index = (35 x 0.25) + (55 x 0.25) + (40 x 0.15) + (60 x 0.10) + (45 x 0.10) + (50 x 0.15) = 8.75 + 13.75 + 6.0 + 6.0 + 4.5 + 7.5 = 46.5 (Fear).Variabelbeskrivelse
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| Symbol | Navn | Enhet | Beskrivelse |
|---|---|---|---|
| FGI | Fear and Greed Index | score (0-100) | The composite sentiment score where 0 is maximum fear and 100 is maximum greed |
| V | Volatility Score | score (0-100) | The normalized measure of current market volatility relative to historical average |
| M | Momentum Score | score (0-100) | The normalized measure of price and volume trend strength |
| S | Social Score | score (0-100) | The normalized sentiment analysis from social media platforms weighted by engagement |
| D | BTC Dominance Score | score (0-100) | The sentiment proxy based on Bitcoin market cap share changes (rising dominance = fear) |
| T | Google Trends Score | score (0-100) | The normalized search volume interest for Bitcoin-related terms |
Slik Crypto Fear & Greed Index Calculator
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- 1Step 1 - The volatility component (25% weight) measures current Bitcoin price volatility against its recent average. When 30-day volatility exceeds the 90-day average significantly, the market is fearful (sharp price swings indicate panic). Low volatility relative to average suggests complacency or greed. The score is normalized to 0-100, where 0 is maximum fear (extreme volatility) and 100 is maximum greed (unusually calm market).
- 2Step 2 - The market momentum component (25% weight) evaluates price and volume trends. If Bitcoin price is above its 30-day simple moving average (SMA) and trading volume is rising, sentiment is greedy (buyers dominating). If price is below the SMA with declining volume, sentiment is fearful. The component also looks at buying volume versus selling volume on major exchanges to gauge directional conviction.
- 3Step 3 - The social media component (15% weight) analyzes the volume and sentiment of cryptocurrency discussions across Twitter/X, Reddit, Telegram, and Discord. Natural language processing algorithms classify posts as bullish, bearish, or neutral. The score considers both the volume of mentions (high activity during manias) and the sentiment ratio (percentage of positive versus negative posts). During peak greed, crypto mentions on Twitter can exceed 10x normal levels.
- 4Step 4 - The Bitcoin dominance component (10% weight) measures the change in Bitcoin market cap share relative to the total crypto market. Rising BTC dominance typically indicates risk-off behavior (investors moving from altcoins to Bitcoin for safety), which correlates with fear. Falling BTC dominance suggests risk-on behavior (investors rotating into speculative altcoins), which correlates with greed.
- 5Step 5 - The Google Trends component (10% weight) tracks search volume for Bitcoin-related terms. Spikes in searches for buy Bitcoin indicate retail FOMO (greed), while searches for Bitcoin crash or crypto scam indicate fear. The absolute search volume is normalized against recent history to account for the secular decline in Bitcoin search interest as it becomes more mainstream.
- 6Step 6 - The survey component (15% weight) aggregates data from crypto polling platforms and prediction markets. Some implementations use StrawPoll weekly surveys of crypto participants, while others use prediction market data from Polymarket or Kalshi as a proxy for market expectations. This component captures the explicit sentiment that market participants are willing to state.
- 7Step 7 - All six components are weighted and summed to produce the final index value from 0 to 100. The calculator displays: the overall index value and label (Extreme Fear 0-24, Fear 25-49, Neutral 50, Greed 51-74, Extreme Greed 75-100), each component score, a historical chart showing the index over time with price overlay, the current percentile rank versus the past year, and the historical return statistics for the current sentiment zone.
Løste eksempler
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All six components converge on extreme fear. This reading of 12 has historically occurred only during major market events (COVID crash March 2020 at index 8, FTX collapse November 2022 at index 10, China mining ban June 2021 at index 11). Each of these extreme fear episodes preceded 100%+ recoveries within 12 months. The calculator flags this as a historically rare contrarian buy signal.
Extreme greed readings above 85 have historically been followed by corrections of 15-30% within 1-3 months. The 2021 peak reached index 95 in November before Bitcoin fell 55% over the next two months. However, extreme greed can persist for weeks during strong rallies, so it is not a precise timing tool. The calculator recommends reducing position sizes and setting stop losses rather than outright selling.
The overall index is neutral but component analysis reveals tension. Social media is very bullish while Google Trends is declining and surveys are pessimistic. This divergence suggests that active crypto participants are bullish but the broader public is disengaged. Such divergences often resolve with a decisive move in either direction within 2-4 weeks.
Praktiske anvendelser
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Quantitative crypto hedge funds incorporate the Fear and Greed Index as one input in multi-factor trading models. Research by firms like Pantera Capital and Galaxy Digital has shown that adding a sentiment factor to purely technical models improves risk-adjusted returns by 10-20% annually. The index is typically used as a position sizing signal: full-size positions during extreme fear, reduced positions during extreme greed, with the transition zone triggering gradual scaling.
Retail investors use the index as an emotional discipline tool. The psychological challenge of crypto investing is that extreme fear feels like the worst time to buy, and extreme greed feels like the best time to buy, when the opposite is statistically true. By checking the index before making trading decisions, investors can override their emotional impulses. Several popular DCA apps (Swan Bitcoin, River) have integrated the index to automatically increase purchase amounts during fear and decrease during greed.
Crypto media companies and newsletters use the index as a daily headline metric. Publications like CoinDesk, The Block, and Decrypt reference the Fear and Greed Index regularly because it provides a simple, digestible market summary that drives reader engagement. The index landing on extreme values (below 10 or above 90) often becomes a viral social media event, generating significant traffic and discussion.
Risk management teams at crypto exchanges and lending platforms monitor the index to adjust margin requirements and risk parameters. When the index hits extreme greed (above 80), the probability of a sharp correction increases, and exchanges may proactively reduce maximum leverage, increase margin requirements, or tighten liquidation thresholds. During extreme fear, they may ease requirements to prevent unnecessary cascade liquidations that would further destabilize the market.
Spesielle tilfeller
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Under COVID-krasjet i mars 2020 traff kryptoindeksen Fear and Greed Index en
Under COVID-krasjet i mars 2020, nådde krypto-frykt- og grådighetsindeksen et rekordlavt nivå på 8 den 13. mars, samme dag som Bitcoin krasjet 50 % fra 8000 til 3800 dollar på en enkelt dag. Dette var den mest ekstreme fryktlesingen som noen gang er registrert. Investorer som kjøpte på dette ekstreme nivået, ville ha sett en avkastning på 1700 % til toppen i november 2021. Hastigheten på krasjet (50 % på én dag) gjorde det imidlertid psykologisk nesten umulig å kjøpe, noe som illustrerer den grunnleggende utfordringen med kontrarisk investering: de beste mulighetene føles verst. Indeksadferden under oksemarkedet i 2021 avslørte et viktig mønster: ekstrem grådighet kan vedvare i lengre perioder under parabolske stevner. Indeksen holdt seg over 75 i over 45 dager på rad tidlig i 2021, hvor Bitcoin steg fra 30 000 til 60 000 dollar. Å selge ved det første ekstreme grådighetssignalet ville ha gått glipp av den beste delen av rallyet. Dette illustrerer at ekstrem grådighet er et bedre signal for å redusere posisjonsstørrelsen enn for å gå helt ut. Kalkulatoren sporer varigheten av ekstreme målinger og viser at avkastningen avtar ettersom ekstrem grådighet vedvarer utover 30 dager. Et unikt fenomen oppstår når indeksen viser ekstrem frykt mens beregninger på kjeden viser akkumulering av langsiktige eiere (ofte kalt smarte penger). Denne divergensen, der detaljhandelen får panikk, men institusjonelle og langsiktige investorer i det stille kjøper, har historisk sett vært det sterkeste bullish-signalet som er tilgjengelig. Kalkulatoren kryssrefererer frykt- og grådighetsindeksen med offentlig tilgjengelige akkumuleringsdata på kjeden for å identifisere disse smarte pengedivergenshendelsene, som skjer omtrent 2-3 ganger per store syklus.
Fear and Greed Index Historical Returns by Zone (2018-2024)
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| Index Zone | Spekter | Avg Days Per Year | Gj.sn. 30d Fremover retur | Gj.sn. 90d Fremover Retur | Gj.sn. 180d Fremover retur |
|---|---|---|---|---|---|
| Ekstrem frykt | 0-24 | 55-70 dager | +12 % | +28 % | +52 % |
| Frykt | 25-49 | 100-130 dager | +5% | +14 % | +25 % |
| Nøytral | 50 | 15-25 dager | +2% | +8% | +15 % |
| Grådighet | 51-74 | 80-100 dager | -1% | +3% | +8% |
| Ekstrem grådighet | 75-100 | 40-60 dager | -5% | -8% | -2% |
Ofte stilte spørsmål
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What does extreme fear mean and should I buy?
Extreme fear (index below 25) means the market is dominated by panic selling, high volatility, and negative sentiment. Historically, buying during extreme fear and holding for 6-12 months has produced positive returns about 85% of the time with an average gain of 50-80%. However, extreme fear can intensify before reversing, so dollar-cost-averaging during fear periods is safer than making a single large purchase.
How often does the index reach extreme values?
Extreme fear (below 25) occurs approximately 15-20% of the time, while extreme greed (above 75) occurs approximately 10-15% of the time. The index spends most of its time in the fear-to-neutral range (25-55), reflecting that crypto markets tend to have a slight fear bias due to their speculative nature. Sustained extremes lasting more than two weeks are rarer, occurring 2-4 times per year.
Can the index be manipulated?
Individual components can be influenced: social media sentiment can be manipulated by bots, Google Trends can be gamed by coordinated search campaigns, and surveys are subject to self-selection bias. However, the index is reasonably robust because it combines multiple independent data sources and weights them to reduce the impact of any single manipulated component. The volatility and momentum components, based on actual market data, are the most manipulation-resistant.
Does the index work for bear markets differently than bull markets?
Yes. During bear markets, the index tends to oscillate between fear and extreme fear, rarely reaching greed territory. Short relief rallies that push the index to neutral or greed often represent selling opportunities rather than the start of a new bull market. Conversely, during bull markets, the index tends to oscillate between greed and extreme greed, with brief dips to fear representing buying opportunities. The market cycle context is essential for interpreting the index correctly.
How does this differ from the CNN Fear and Greed Index for stocks?
The crypto index uses different components adapted for crypto markets: BTC dominance, crypto-specific social media, and crypto Google Trends replace the stock market indicators of put/call ratios, junk bond demand, and stock breadth. The crypto index is more volatile, reaching extremes more frequently due to the higher emotional intensity of crypto markets. The stock index rarely goes below 10 or above 90, while the crypto index reaches these levels multiple times per year.
Should I change my portfolio allocation based on the index?
The index is best used to adjust position sizing and timing rather than fundamental allocation decisions. If your long-term target is 10% crypto, the index might suggest deploying that allocation faster during extreme fear and slower during extreme greed. It should not be used to make major allocation changes like going from 10% to 50% crypto because the index hit extreme fear. Tactical adjustments of 20-30% around your target allocation are more appropriate.
Vanlige feil å unngå
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Pro Tips
Sett opp automatiske varsler for når indeksen faller under 20 eller stiger over 80. Disse ekstreme avlesningene forekommer sjelden nok (kanskje 6-10 ganger per år) til at de kan handles. Når du mottar et fryktvarsel, distribuer ekstra kapital gjennom DCA i løpet av de neste 2-4 ukene i stedet for i ett enkelt kjøp. Når du mottar et grådighetsvarsel, bør du vurdere å ta 10-20 % av fortjenesten av bordet. Denne systematiske tilnærmingen fjerner følelser fra beslutningsprosessen.
Visste du?
Krypto-frykt- og grådighetsindeksen traff ekstrem grådighet (over 90) 9. november 2021, den nøyaktige dagen hvor Bitcoin nådde sin rekordhøye på 69 000 dollar. I løpet av 30 dager hadde Bitcoin falt til 42 000 dollar (en nedgang på 39 %), og i løpet av 13 måneder nådde den 15 500 dollar (en nedgang på 77 %). Dette enkeltdatapunktet illustrerer perfekt indeksens kontrariske verdi: når absolutt alle er grådige, er toppen ofte allerede inne.
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