Donchian Channel Calculator
Calculate Donchian Channel upper and lower bands based on N-period highs and lows. Enter values for instant results with step-by-step formulas.
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer
Donchian Channel Calculator
Calculator
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Formula: Upper = Highest High(N) | Lower = Lowest Low(N) | Middle = (Upper + Lower) / 2
Worked example — Upper: 163.00 | Middle: 155.50 | Lower: 148.00 | Price at 80% of channel (upper zone)
Formula
Upper = Highest High(N) | Lower = Lowest Low(N) | Middle = (Upper + Lower) / 2
Where N is the lookback period (typically 20). The upper band is the highest high price and the lower band is the lowest low price observed over the last N periods. The middle line is the simple average of the upper and lower bands.
Worked Examples
Example 1: Basic Donchian Channel Calculation
Problem:Over the last 20 periods, the highest high was 163 and the lowest low was 148. Current price is 160. Calculate the Donchian Channel levels.
Solution:Upper Channel = Highest High (20 periods) = 163.00 Lower Channel = Lowest Low (20 periods) = 148.00 Middle Line = (163.00 + 148.00) / 2 = 155.50 Channel Width = 163.00 - 148.00 = 15.00 Channel Width % = (15.00 / 155.50) x 100 = 9.65% Position = ((160 - 148) / 15) x 100 = 80.0% (upper zone)
Result:Upper: 163.00 | Middle: 155.50 | Lower: 148.00 | Price at 80% of channel (upper zone)
Example 2: Turtle Trading Entry Signal
Problem:20-period Donchian upper channel is at 163. Price closes at 163.50. 10-period lower channel is at 155. Evaluate the Turtle Trading signal.
Solution:Price (163.50) > Upper Channel (163.00) = New 20-period high Turtle System 1 Entry: Long entry triggered Exit channel (10-period lower) = 155.00 Risk per unit = 163.50 - 155.00 = 8.50 points If ATR = 4.00, position size = Account Risk / (ATR x Dollar per Point) The exit will trail up as the 10-period low rises
Result:Long Entry Signal at 163.50 | Exit at 10-period low (155.00) | Risk: 8.50 points per unit
Frequently Asked Questions
What is the Donchian Channel and who created it?
The Donchian Channel was created by Richard Donchian, who is widely regarded as the father of trend following. The indicator consists of three lines plotted on a price chart: the upper band showing the highest high over the last N periods, the lower band showing the lowest low over the last N periods, and a middle line that is the average of the upper and lower bands. Donchian developed this indicator in the 1930s and 1940s, making it one of the oldest technical indicators still in widespread use today. The standard setting uses 20 periods, which represents approximately one month of trading days. Its simplicity is its strength, as it clearly identifies the price range and potential breakout levels.
How is the Donchian Channel calculated?
The Donchian Channel calculation is straightforward compared to many other technical indicators. The Upper Band equals the highest high price over the last N periods, where N is typically 20. The Lower Band equals the lowest low price over the last N periods. The Middle Line equals the average of the Upper and Lower bands, calculated as (Highest High + Lowest Low) divided by 2. Unlike moving averages which use all prices in the lookback window, Donchian Channels only care about the single highest high and single lowest low. This means one extreme candle can define an entire channel boundary until it falls outside the lookback window, at which point the channel will contract or shift.
What is the Turtle Trading system and how does it use Donchian Channels?
The Turtle Trading system was a famous trend-following strategy taught by Richard Dennis and William Eckhardt in their 1983 experiment to prove that trading could be taught. The system uses Donchian Channels as its primary entry and exit mechanism. Entry signals occur when price breaks above the 20-period upper channel (buy) or below the 20-period lower channel (sell short). Exit signals use a shorter 10-period Donchian Channel, where long positions are closed when price touches the 10-period lower channel. Position sizing is based on the ATR to normalize risk across different instruments. The Turtles reportedly turned a combined $1.6 million into over $100 million in just a few years using this systematic approach.
How do you identify breakouts using Donchian Channels?
A Donchian Channel breakout occurs when price moves beyond the upper or lower channel boundary, representing a new high or low for the lookback period. A bullish breakout happens when price closes above the upper channel, signaling that buyers have pushed price to a new N-period high. A bearish breakout occurs when price closes below the lower channel. The significance of the breakout depends on the channel period length, with longer periods producing fewer but more meaningful breakouts. Volume confirmation is crucial, as breakouts with high volume are more likely to lead to sustained trends. False breakouts are common, so many traders wait for a close outside the channel rather than just an intraday breach.
What channel period should I use for Donchian Channels?
The optimal Donchian Channel period depends on your trading style and the market you are trading. The classic 20-period setting works well for swing trading on daily charts, capturing approximately one month of price action. Shorter periods like 10 or 14 generate more frequent signals suitable for active traders but produce more false breakouts. Longer periods like 50 or 55 periods (used in the original Turtle system for System 2) produce fewer but higher quality signals ideal for position trading. For intraday trading, periods of 20-50 on 5-minute or 15-minute charts can identify short-term breakout opportunities. Many traders use multiple Donchian Channels simultaneously, such as 20-period for entries and 10-period for exits.
How does channel width relate to market volatility?
The Donchian Channel width is a direct measure of the price range over the lookback period and serves as a volatility gauge. When the channel is narrow, it indicates a period of low volatility and price compression, which often precedes a significant breakout move. Wide channels indicate high volatility with large price swings within the lookback period. As the channel narrows, the upper and lower bands converge, creating a squeeze pattern similar to Bollinger Band squeezes. Traders watch for the channel to start expanding after a period of compression as a signal that a new trend is beginning. The channel width divided by the middle line gives a percentage measure of relative volatility that can be compared across different instruments.
How do Donchian Channels compare to Keltner Channels?
Donchian Channels and Keltner Channels both create price envelopes but differ fundamentally in their construction and behavior. Donchian Channels use the absolute highest high and lowest low over a fixed period, making them stepwise and only changing when a new extreme is set or an old extreme drops off. Keltner Channels use an EMA center line with ATR-based bands, producing smooth, continuously moving boundaries. Donchian Channels are more reactive to extreme price moves since a single spike sets the channel, while Keltner Channels smooth out such spikes. Donchian Channels are preferred for breakout trading because they clearly define new highs and lows, while Keltner Channels are better for mean reversion strategies due to their smoother boundaries.
What are common false breakout patterns with Donchian Channels?
False breakouts occur when price briefly exceeds a Donchian Channel boundary but fails to sustain the move and reverses back inside the channel. These are most common in ranging or choppy markets with no clear trend. Common false breakout patterns include the spike and reversal, where price gaps or spikes beyond the channel on high emotion but immediately reverses. Another pattern is the gradual push where price slowly creeps above the channel without momentum, often failing within one or two bars. To filter false breakouts, traders require a full close beyond the channel rather than just an intraday penetration, use volume confirmation, and check the ADX to ensure a trend exists. Setting the channel period longer reduces false breakouts but also delays entry into valid trends.
Can Donchian Channels be used for setting stop losses?
Donchian Channels provide natural stop loss levels based on recent price extremes. For long positions entered on an upper channel breakout, the most common stop loss is placed at the lower channel of a shorter period, typically 10 periods for a 20-period entry channel. This ensures the stop is placed at a significant support level defined by recent price action. A tighter stop can be placed at the middle line of the entry period channel. For trailing stops, as the lower channel moves higher in an uptrend, the stop loss automatically ratchets up, locking in profits. The advantage of Donchian-based stops is that they are objective and adaptive, widening during volatile periods and tightening during calm periods, which prevents premature stop-outs during normal volatility.
How do you use multiple Donchian Channel timeframes together?
Multi-timeframe Donchian Channel analysis involves using different channel periods or chart timeframes to create a layered trading approach. The most common setup uses a longer period channel for trend direction and a shorter period for entry timing. For example, only take long trades when price is above the 50-period upper channel (confirming an uptrend), and enter specifically when price breaks above the 20-period upper channel (timing the entry). Exits use the 10-period lower channel. This triple-channel approach reduces false signals by requiring alignment across multiple lookback periods. Another approach uses the same period on different chart timeframes, requiring the weekly and daily Donchian Channels to agree on direction before entering a trade on the hourly chart.
References
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer · Editorial policy
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