Bitcoin Volatility — Rolling Annualized, Live

Annualized volatility computed from Bitcoin's own daily price swings, smoothed over 30 and 90 days. The multi-year downward drift is one of the most-cited pieces of evidence that Bitcoin is behaving less like a speculative instrument and more like a mature asset — cycle over cycle.

Data: PriceUSD · Coin Metrics community API · computed live in your browser, nothing uploaded

What this chart shows

This page computes Bitcoin's daily log returns and measures their rolling standard deviation over 30-day and 90-day windows, then annualizes the result — the standard way volatility is quoted for any tradable asset.

Annualized Vol % = stdev(daily log returns, n days) × √365 × 100

365 (not the 252 trading days used for stocks) is used here because Bitcoin trades every day of the year, weekends included.

How to read it

The gauge shows the current 30-day annualized reading. Lower readings mean price has recently moved in a tighter range relative to its own history; higher readings mean recent daily swings have been unusually large. Looking at the full chart rather than a single reading is what reveals the actual story here: each cycle's volatility peaks and floors have both been lower than the one before.

Limitations

Volatility compression is a real multi-cycle trend, but "lower than before" still means dramatically higher than almost any other major asset class — Bitcoin's calmest recent stretches are still more volatile than most equity indices' worst days.

A short rolling window (30 days) reacts quickly to regime changes but can spike sharply on a single news-driven day; the 90-day line is shown alongside specifically to separate short-lived shocks from an actual trend change.

Volatility says nothing about direction. A quiet period can resolve upward or downward with equal ease — this page measures the size of price moves, not which way they're likely to go.

FAQ

Why has Bitcoin's volatility been declining?

A larger, more liquid market absorbs any given dollar of buying or selling with a smaller price impact than a smaller one did years ago. Rising institutional participation, ETF flows, and derivatives markets that let large holders hedge without selling spot are all cited as contributing factors — though no single cause is proven.

Is low volatility a bullish or bearish sign?

Neither, by itself. Volatility measures the size of price swings, not their direction. Extended low-volatility periods have preceded both breakouts and breakdowns historically — it's a measure of how calm the market is, not which way it's leaning.

Why show both 30-day and 90-day windows?

The 30-day line reacts fast — useful for spotting a regime shift early — but can spike on a single sharp day and then fade. The 90-day line filters that noise out, showing whether a change is a brief shock or an actual shift in the market's baseline behavior.