Bollinger Bands Calculator
Calculate Bollinger Bands (upper, middle, lower) from a series of prices. Customize the period and standard deviation multiplier to gauge volatility.
0 values parsed (need at least 20)
FAQ
How are Bollinger Bands calculated?›
Bollinger Bands consist of three lines: the middle band (SMA of closing prices), the upper band (SMA + multiplier x standard deviation), and the lower band (SMA - multiplier x standard deviation). Default settings are 20-period SMA with 2x standard deviation.
What does a Bollinger Band squeeze indicate?›
A Bollinger Band squeeze occurs when the bands narrow significantly, indicating low volatility. This often precedes a large price move (breakout). Traders watch for squeezes as a signal that a big move is coming, though it does not predict direction.