What is the Bitcoin Fibonacci Retracement Cycle Zone?

It measures how far Bitcoin has retraced inside its own multi-year range. Each week it computes 100 × (highest high − price) / (highest high − lowest low) over a rolling window — an inverted stochastic. A reading of 0 means price is sitting right at the window's high (a cycle top); 100 means it has fallen all the way back to the window's low (a cycle bottom). The Fibonacci ratios 23.6, 38.2, 50, 61.8 and 78.6 are drawn as the zone lines, so it reads like a retracement: near 23.6 the market has barely pulled back (expensive), near 78.6 it has retraced deeply (cheap).

High is cheap, low is expensive — the opposite of most oscillators, because it is measuring retracement, not price. Above 78.6 (the green 'Bottom' line) Bitcoin has retraced deeply toward its multi-year low and has historically been near cycle bottoms. Below 23.6 (the red 'Top' line) price is pressing its multi-year highs and has historically been near cycle tops. The middle Fibonacci levels (38.2 / 50 / 61.8) mark the mid-cycle zone.

How is it calculated?

It is a pure price calculation — no on-chain data. Daily prices are resampled to weekly candles, then for each week the highest high and lowest low over a rolling multi-year window are taken and the current close is expressed as its retracement percentage of that range, inverted so that a deep pullback reads high. The window length is the one tunable input; a longer window emphasises the full multi-year cycle, a shorter one is more responsive.

Bitcoin Fibonacci Retracement Cycle Zone — Live Chart

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Data source: BGeometrics.com · chart & styling by DurdenBTC.

What This Chart Shows

The Fibonacci Retracement Cycle Zone asks: how far has Bitcoin pulled back inside its own multi-year range? Each week it measures where price sits between its rolling high and low, then flips it so a deep pullback reads high. It is bounded 0–100, and the classic Fibonacci ratios become the zone lines.

Price sits in the top panel on a log scale.
Fibonacci Cycle Zone (blue) runs in the lower panel: 100 × (high − price) / (high − low) over a rolling multi-year window on weekly candles.
Zones — the Fibonacci lines 23.6 / 38.2 / 50 / 61.8 / 78.6. Above 78.6 (green “Bottom”) is a deep retracement; below 23.6 (red “Top”) price is near its highs.
Shading — the price panel tints green when the zone is in the bottom band and red when it is in the top band.

How to Read It

Remember it is inverted: high is cheap, low is expensive, because it measures retracement rather than price. When the blue line pushes above 78.6, Bitcoin has fallen deep into its multi-year range — historically the neighbourhood of cycle bottoms (2015, 2019, 2022–23). When it drops below 23.6, price is pinned near its multi-year highs — the neighbourhood of cycle tops. The middle Fibonacci levels frame the mid-cycle drift in between.

Like any range oscillator it can sit stretched for a while during a strong trend, so it is a context gauge, not a trigger. Drag to pan and scroll to zoom; the toolbar autoscales to the full history, resets the view, or downloads the chart. Hover to read price and the zone value together for any date.

Frequently Asked Questions

What is the Fibonacci Retracement Cycle Zone?

An inverted range oscillator: 100 × (highest high − price) / (highest high − lowest low) over a rolling multi-year window, computed on weekly candles. 0 = price at the window high (cycle top); 100 = price back at the window low (cycle bottom).

Why are the levels Fibonacci numbers?

The zone lines use the standard Fibonacci retracement ratios — 23.6, 38.2, 50, 61.8, 78.6 — so the oscillator reads like a retracement. 23.6 is a shallow pullback (labelled “Top”), 78.6 is a deep one (“Bottom”).

Is this on-chain data?

No — it is pure price math. Just Bitcoin's own weekly high, low and close through a rolling window.

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