Renko charts are an alternative way of viewing price that strips away the time axis and focuses purely on movement. Instead of drawing a new candle every minute or every hour, the chart only prints a new brick when price has travelled a predefined distance. This simple rule makes trends, pullbacks and reversals much easier to see, at the cost of hiding some of the detail that time based charts reveal.
What are Renko charts?
In a standard candlestick chart, every candle represents a fixed time period such as one minute, fifteen minutes or one day. Even if the market barely moves, a candle appears. By contrast, a Renko chart ignores time. It draws equal sized bricks that represent a fixed price move. When price rises by one brick size from the close of the previous brick, an up brick is added. When price falls by one brick size, a down brick is added.
Because the chart only cares about distance travelled, periods of sideways noise where price oscillates in a tight range may produce no new bricks at all. During strong trends, bricks can stack in long sequences without any interruptions. This is why many traders see Renko as a tool for clarifying structure and bias rather than for precision execution.
How Renko bricks are built
The key design decision is the brick size. It can be defined in pips, ticks or points depending on the instrument and platform. Too small and the chart becomes noisy, defeating the purpose. Too large and entries, exits and risk calculations become crude. Many platforms offer two broad approaches.
Fixed brick size
With a fixed brick size, every brick represents the same number of pips. For example, on a major forex pair a trader might choose a 10 or 20 pip brick. If the last brick closed at 1.1000 and the brick size is 20 pips, the next up brick can only close at 1.1020, while the next down brick can only close at 1.0980. Price can move inside that band however it likes, but no new brick appears until one of those levels is reached.
ATR based brick size
Some traders prefer to adapt the brick size to volatility by using an Average True Range, often abbreviated as ATR. In this approach the platform calculates the recent average range of price and sets the brick size to a multiple of that value. When volatility expands, bricks get larger, keeping the number of bricks manageable. When volatility contracts, bricks shrink, maintaining sensitivity.
Reversal bricks
A further design choice is how many bricks price must move in the opposite direction before a reversal is drawn. A common rule is that price must travel at least two brick sizes to print the first brick in the new direction. This prevents the chart from flipping direction too easily and reduces whipsaws, but it also means reversals appear later than they do on a normal chart.
Strengths of the Renko approach
The main attraction of Renko is noise reduction. Because insignificant movements are ignored, the resulting structure tends to be clean. Traders can quickly see whether the market is trending or ranging, and whether pullbacks are shallow or deep. Long runs of same coloured bricks suggest a strong directional move, while alternating bricks indicate hesitation or choppy trading conditions.
This clarity helps some traders stick with winners for longer. On a time based chart, a few small counter trend candles can be emotionally uncomfortable even if the larger trend is intact. On a Renko chart, those same wiggles may not generate any new bricks, making it easier to ride the move until a genuine reversal occurs.
Another advantage is that support and resistance levels can become more obvious. Zones where multiple swings turned previously will often align neatly on a Renko chart, because minor spikes and intrabar noise have been filtered out. Trend lines and channels drawn through sequences of bricks can also be easier to respect and manage.
Limitations and hidden risks
The simplicity of Renko comes with trade offs that traders must understand before relying on it. First, intraperiod volatility is hidden. While a brick is forming, price may have moved substantially above or below the eventual close, but the Renko chart will not show those extremes. For instruments with large gaps or news driven spikes, this means the chart can understate risk.
Second, historical bricks can appear to change when viewed in hindsight, depending on how the platform constructs the chart. Because bricks are created from a continuous stream of ticks rather than fixed time bars, the exact sequence that would have been visible in real time is not always obvious. This introduces challenges for backtesting any strategy that relies on very specific brick patterns.
Third, indicators that depend on time, such as moving averages based on a fixed number of minutes or hours, no longer behave in the usual way when applied directly to Renko. On a Renko chart, ten bricks might represent a few minutes in a fast market or several hours in a slow one. For this reason, many traders keep their indicators on a standard candlestick chart and use Renko purely as an auxiliary view.
Comparing Renko and candlestick charts
| Feature | Candlestick chart | Renko chart |
|---|---|---|
| Horizontal axis | Time based; every bar has equal time | Price based; bricks appear only when price moves |
| Noise level | Includes all small fluctuations | Filters minor moves below brick size |
| Visibility of gaps and wicks | Shows intrabar highs, lows and gaps | Hides intrabrick extremes and compresses gaps |
| Indicator behaviour | Most indicators designed for this view | Some indicators lose their usual meaning |
| Best use case | Execution, precise entries and exits | Trend bias, structure and visual clarity |
Using Renko charts in a trading workflow
A practical way to use Renko is as a higher clarity filter layered on top of a conventional chart. One common workflow is to define the trend and key levels on the Renko view, then time entries and exits on time based candles.
- Select an instrument and decide on an appropriate brick size, either fixed or ATR based, that balances noise reduction with responsiveness.
- Scan the Renko chart to identify the current directional bias. Are bricks mostly aligned in one direction or alternating frequently.
- Mark clear zones where multiple swings stalled or reversed. These areas become candidate support and resistance.
- Switch to a standard candlestick chart on a timeframe that matches your style, for example fifteen minutes for intraday trading or four hours for swing trading.
- Wait for price on the candlestick chart to move into a zone defined on the Renko view, then watch for your preferred entry patterns such as engulfing candles, small pullbacks or momentum shifts.
- Place stops and targets using the more precise price information from the candlestick chart, while keeping the broader Renko structure in mind.
Combining Renko with indicators
Many traders enhance Renko based analysis with a small set of well understood indicators. Moving averages can highlight the direction of the underlying bias. When bricks are predominantly above a rising average, pullbacks into that average on the candlestick chart can be attractive continuation setups. When bricks sit below a falling average, the same logic applies for short trades.
Momentum tools such as the Relative Strength Index can help distinguish between strong trends and fading moves. For example, a long sequence of up bricks accompanied by RSI divergence warns that the move may be running out of steam, even if the bricks themselves have not yet reversed. Volume or tick based measures can confirm whether breakouts that appear on the Renko view are receiving genuine participation.
Risk management and expectations
No chart type removes the need for disciplined risk management, and Renko is no exception. Because each brick represents a fixed move, stops are often set in multiples of the brick size. For instance, a trader might place a protective stop two or three bricks away from entry, and aim for a reward of at least an equal or larger number of bricks. Translating these distances back into account risk keeps position sizing grounded.
It is also important to avoid overconfidence. The visual cleanliness of Renko can give the illusion of predictability. In reality, the market can and will trend through apparently strong zones or reverse where there was little prior structure. Treat Renko as a clarity tool, not as an oracle. Combine it with higher timeframe context, awareness of scheduled news and a tested method.
Conclusion
Renko charts offer a different lens on price by discarding time and insisting that only meaningful moves deserve a place on the chart. When configured thoughtfully, they can make trends, pullbacks and key zones easier to recognise and manage. At the same time, they hide intrabrick detail and can complicate indicator use and backtesting.
For many traders, the most effective approach is to keep Renko alongside a traditional candlestick chart. Use the bricks to clarify bias and structure, then rely on the time based view for execution, risk control and journaling. Handled this way, Renko becomes a useful addition to the toolkit rather than a replacement for the charts that underpin most trading platforms.