ATR Channel - Dynamic Support/Resistance

Risk disclaimer

Volatility reference only — a break can be a trend or just noise.

The channel visualizes the normal volatility range: most ordinary moves stay inside ±N×ATR, and breaks often signal expanding moves.

Larger multiples make a wider, more meaningful band.

Price 100, ATR 2, multiple 2 → upper 104, lower 96.

As ATR expands with volatility, the channel adapts to the market.

vs Bollinger Bands?

ATR channels size by true range around the current price; Bollinger uses standard deviation around a moving average — different construction.

Pair with the ATR and ATR-stop calculators.

Compute classic pivot point and support/resistance levels from the previous high, low and close.

Compute true range (TR) from a bar's high, low and previous close, then smooth into ATR with a prior ATR and period.

Compute the Sharpe ratio from annual return, risk-free rate and annual volatility.

Compute the Calmar ratio from annual return and maximum drawdown to gauge reward for drawdown risk.

Estimate the sigma price range over a horizon from price, annual volatility, days and confidence multiple z.

Convert a per-period standard deviation into annualized volatility given periods per year.