Bitcoin & Crypto
Bitcoin is famous for its rapid and intense price swings. Knowing the annualized historical volatility helps traders and investors evaluate risk and opportunity. In this guide, discover what volatility is, how it is calculated, and how to make the most of our Bitcoin Volatility Calculator.
✓ Contenuto verificato e aggiornato — Maggio 2026
What is Bitcoin (BTC) volatility
Volatility measures the magnitude and frequency of an asset's price changes. In the case of BTC, high values indicate large movements in a short time; lower values suggest greater stability. There are two main types:
- Historical volatility: calculated from past data (daily returns).
- Implied volatility: expected by the market, inferred from options prices.
How the Bitcoin Volatility Calculator works
Required inputs
- Period in days over which to calculate volatility (e.g., 30, 90, 180).
Tip: choose a time horizon consistent with your strategy (short, medium, long term).
Output
- Annualized historical volatility of BTC based on daily returns for the selected period.
Formula and calculation method
Typical steps:
- Calculate the logarithmic or percentage daily returns of BTC for the chosen period.
- Estimate the standard deviation of the daily returns.
- Annualize by multiplying by the square root of the number of days/year (for crypto often √365 since it trades 24/7).
In some stock market contexts, √252 (market days) is used. For BTC, since it trades 7/7, √365 is commonly used.
Why use this calculator
- Free and instant: enter the days, get the value.
- More informed decisions: useful for risk management, position sizing, and period comparison.
- Suitable for traders and investors: supports technical analysis and systematic strategies.