Renko bars are a type of financial chart used in technical analysis to visualize price action. Unlike traditional candlestick or bar charts, Renko charts do not use time as a unit of measurement. Instead, they use price movements to determine the size of each brick, or Renko bar. Understanding how Renko bars are created is crucial for traders who want to use this unique chart type in their analysis.

Renko charts were originally developed by Japanese rice traders in the 18th century. The name 'Renko' comes from the Japanese word for 'brick,' reflecting the chart's distinctive rectangular shape. Today, Renko bars are used by traders across various financial markets, including stocks, forex, and commodities.

How Renko Bars Are Created
Renko bars are created using a simple yet powerful algorithm. The process involves two key parameters: the box size and the price movement required to create a new bar. Let's dive into the details of how Renko bars are generated.

First, traders need to choose a box size, which determines the minimum price movement required to create a new Renko bar. This size can be fixed or variable, depending on the trader's preference and the market conditions.
Fixed Box Size

In a fixed box size Renko chart, the box size remains constant throughout the entire chart. For example, if a trader chooses a box size of 10 pips, each Renko bar will represent a 10-pip price movement, regardless of the time it takes to achieve that movement. This approach provides a consistent and easy-to-understand chart, but it may not adapt well to changing market conditions.
To create a new Renko bar with a fixed box size, the price must move by the specified amount in the direction of the current trend. If the price moves against the trend, the bar will not close until the required box size is reached. This creates a unique charting style where bars can remain open for extended periods, providing a clear visual representation of price action.
Variable Box Size

In a variable box size Renko chart, the box size adjusts based on market volatility. This approach can provide a more adaptive chart, but it may also result in more complex and difficult-to-interpret price action. To create a variable box size Renko chart, traders can use various methods, such as setting a minimum and maximum box size or using a percentage-based box size adjustment.
For example, a trader might set a minimum box size of 5 pips and a maximum box size of 20 pips. As the market becomes more volatile, the box size will increase, allowing for larger price movements to create new Renko bars. Conversely, as the market calms down, the box size will decrease, requiring smaller price movements to create new bars.
Interpreting Renko Charts

Once Renko bars are created, traders can use them to analyze price action and make trading decisions. Unlike traditional charts, Renko charts do not display time, so traders must rely on price movement to determine support and resistance levels, trends, and reversals.
Renko charts can be particularly useful in identifying trends and reversals, as the rectangular shape of the bars makes it easy to see when the price is moving in a consistent direction. Additionally, Renko charts can help traders filter out noise and focus on significant price movements, as each bar represents a meaningful price change.




















Support and Resistance Levels
On a Renko chart, support and resistance levels are identified by the highs and lows of the Renko bars. When the price reaches a certain level and reverses, creating a new Renko bar, that level can be considered a potential support or resistance zone. Traders can use these levels to identify potential entry and exit points for trades.
For example, if the price reaches a high of 1.3000 on a Renko chart and then reverses, creating a new Renko bar, that level can be considered a potential resistance zone. If the price later returns to that level and bounces off it, that could be a signal to sell, as the resistance level is holding. Similarly, if the price reaches a low of 1.2500 and then reverses, creating a new Renko bar, that level can be considered a potential support zone. If the price later returns to that level and bounces off it, that could be a signal to buy, as the support level is holding.
Trends and Reversals
Renko charts can be used to identify trends and reversals by looking for patterns in the price action. For example, a series of higher highs and higher lows can indicate an uptrend, while a series of lower lows and lower highs can indicate a downtrend. Traders can use these trends to identify potential entry and exit points for trades.
Reversals can be identified by looking for changes in the pattern of higher highs and higher lows (for uptrends) or lower lows and lower highs (for downtrends). For example, if the price is in an uptrend and suddenly creates a Renko bar with a lower low, that could be a signal that the trend is reversing and that it's time to sell.
Incorporating Renko charts into your trading analysis can provide valuable insights into price action and help you make more informed trading decisions. By understanding how Renko bars are created and how to interpret Renko charts, traders can gain a powerful tool for navigating the markets. So why not give Renko charts a try and see how they can enhance your trading strategy?