← Back to home

Crypto Fear & Greed Index

Transparent algorithm · Hourly updates · Free API · Embeddable on your site
--
Loading…
--
24h momentum
--
7d trend
--
Volatility
--
Volume heat

How to read this number

0-25 Extreme Fear: the market is in panic mode, historically often near local bottoms; 25-45 Fear: sentiment is cooling; 45-55 Neutral; 55-75 Greed: sentiment is heating up; 75-100 Extreme Greed: euphoria across the board, historically a high-risk zone.

The classic use is as a contrarian signal — Buffett's "be fearful when others are greedy, and greedy when others are fearful." Of course, the index is not a buy/sell signal, just a sentiment thermometer.

The algorithm (fully transparent)

Based on public CoinGecko data, combining four weighted components, recalculated automatically every hour:

ComponentWeightHow it's calculated
24h momentum35%BTC 24h % change, mapped ±10% onto 0-100 (up = greedy)
7-day trend25%BTC 7-day % change, mapped ±20% onto 0-100
Volatility20%Standard deviation of 7-day daily returns; higher volatility = more fear
Volume heat20%24h volume vs 7-day average; a volume spike = active sentiment

Embed on your site (free)

Copy the code below and paste it into your webpage to display a live, self-updating widget (no maintenance needed):

<iframe src="https://qiaobax.com/tools/fear-greed-index/embed/?lang=en" width="320" height="230" frameborder="0" loading="lazy" title="Crypto Fear & Greed Index"></iframe> <p style="font-size:12px">Data by <a href="https://qiaobax.com/en/tools/fear-greed-index/">Crypto Fear & Greed Index</a> · qiaobax.com</p>
<iframe src="https://qiaobax.com/tools/fear-greed-index/embed/" width="320" height="230" frameborder="0" loading="lazy" title="加密货币恐慌贪婪指数"></iframe> <p style="font-size:12px">数据来自 <a href="https://qiaobax.com/tools/fear-greed-index/">加密货币恐慌贪婪指数</a> · qiaobax.com</p>

Free JSON API (no key needed)

GEThttps://qiaobax.com/api/fng

CORS-enabled, callable directly from the frontend; data updates hourly, cache for at least 5 minutes. Example response:

{ "value": 59, "labelZh": "贪婪", "labelEn": "Greed", "components": { "momentum24h": 62, "trend7d": 56, "volatility": 52, "volume": 66 }, "updatedAt": "2026-07-03T02:00:01.000Z" }

JavaScript example:

fetch('https://qiaobax.com/api/fng') .then(r => r.json()) .then(d => console.log(`Fear & Greed Index: ${d.value} (${d.labelEn})`));

FAQ

What is the Fear & Greed Index?
A 0-100 measure of crypto market sentiment: 0-25 Extreme Fear, 25-45 Fear, 45-55 Neutral, 55-75 Greed, 75-100 Extreme Greed. The classic use is as a contrarian signal.
Why does this differ from alternative.me's index?
Different algorithm. We only use verifiable market data — price, volatility and volume (fully open algorithm) — with no social media or survey inputs, so it's more responsive to short-term price action. The two can be used to cross-check each other.
Are there API rate limits?
Free, no API key required, CORS-enabled. Data updates hourly, please cache responsibly (5+ minutes recommended); abusive high-frequency requests may be rate-limited by the CDN.
Will embedding this widget slow down my site?
No. The iframe uses loading="lazy", the widget itself is under 20KB, and it has no third-party dependencies or tracking scripts.
HomeCoinsCalculatorReferrals
The index reflects market sentiment only and does not constitute investment advice.