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Price Action Chart Tool

Free Renko Chart Generator

Transform your OHLC price data into Renko charts. Filter out market noise, identify clear trends, and export brick data for your trading analysis.

Traditional & ATR Renko
CSV Export
100% Free

Upload OHLC Data

Required CSV Format

Columns Required:

date,open,high,low,close
2026-01-01,99.0,100.5,98.5,100.2
2026-01-02,100.0,101.0,99.5,100.8

All four price columns (open, high, low, close) are required for Renko calculation.

Renko Settings

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What is a Renko Chart?

A Renko chart is a type of financial chart developed by the Japanese that focuses purely on price movement, ignoring time and volume entirely. The name "Renko" comes from the Japanese word "renga," meaning "brick" – and that's exactly what these charts display: a series of bricks (or boxes) that represent price changes of a fixed amount.

Unlike traditional candlestick or bar charts where each candle represents a fixed time period (like 1 hour or 1 day), Renko charts only draw a new brick when price moves by a predetermined amount. This unique approach filters out minor price fluctuations and market noise, making it easier to identify significant trends, support and resistance levels, and potential reversal points.

How to Use This Renko Chart Generator

  1. 1

    Upload Your OHLC Data

    Export historical price data from your broker or trading platform in CSV format. The file must contain columns for date, open, high, low, and close prices. Download our sample file to see the exact format required.

  2. 2

    Choose Renko Type

    Select between Traditional Renko (fixed brick size in points) or ATR-based Renko (adaptive brick size based on Average True Range). ATR-based is recommended for volatile markets.

  3. 3

    Configure Brick Size

    For Traditional Renko, set the brick size in price points (e.g., $1 per brick). For ATR-based, set the ATR period (typically 14) and multiplier (typically 1-2x).

  4. 4

    Analyze the Chart

    Review the generated Renko chart to identify trends, support/resistance zones, and potential entry/exit points. Green bricks indicate upward movement, red bricks indicate downward movement.

  5. 5

    Export Brick Data

    Download the brick data as CSV for further analysis, backtesting, or integration with your trading systems. Each brick includes direction, open/close prices, and date range.

Why Use Renko Charts for Trading?

Clear Trend Identification

By filtering out minor price movements, Renko charts make trends crystal clear. Sequences of same-colored bricks indicate strong trends.

Noise Reduction

Eliminates the "noise" of small price fluctuations that can lead to false signals on time-based charts. Focus on significant price movements only.

Support & Resistance

Horizontal support and resistance levels become more visible as Renko bricks naturally cluster around key price zones.

Reversal Signals

Color changes in Renko bricks provide clear reversal signals. A change from green to red (or vice versa) requires a significant price move.

ATR Adaptability

ATR-based Renko automatically adjusts brick size to market volatility, providing consistent signal quality across different market conditions.

Export & Backtest

Export brick data for backtesting strategies or integration with automated trading systems. Each brick includes all relevant data points.

Renko Charts vs. Candlestick Charts

AspectRenko ChartsCandlestick Charts
Time FactorIgnores time completelyBased on fixed time intervals
New Bar TriggerFixed price movementTime period completion
Noise FilteringExcellent - filters small movesLimited - shows all price action
Trend ClarityVery clear trend visualizationCan be noisy in ranging markets
Best ForTrend following, swing tradingDetailed price action analysis

Frequently Asked Questions

What is a Renko chart?

A Renko chart is a type of price chart that only shows price movement, ignoring time and volume. It uses bricks (or boxes) of a fixed size to represent price changes. A new brick is only drawn when price moves by the brick size amount, filtering out minor fluctuations and highlighting significant trends.

How does Renko differ from candlestick charts?

Unlike candlestick charts that show price action over fixed time periods, Renko charts focus purely on price movement. Each Renko brick represents a specific price change, making trends clearer by eliminating time-based noise. This helps traders identify support/resistance levels and trend reversals more easily.

What is the difference between Traditional and ATR-based Renko?

Traditional Renko uses a fixed brick size (e.g., $5 per brick), while ATR-based Renko calculates brick size using the Average True Range indicator, which adapts to market volatility. ATR-based Renko is better for volatile markets as it automatically adjusts brick size to current conditions.

How do I choose the right brick size?

The optimal brick size depends on your trading timeframe and the asset's volatility. Smaller bricks show more detail but generate more signals (including false ones). Larger bricks filter more noise but may miss smaller moves. For ATR-based, a multiplier of 1-2x ATR is common. Experiment to find what works for your strategy.

What file format does this tool accept?

The Renko Chart Generator accepts CSV files with OHLC (Open, High, Low, Close) data. Your file should have columns for date, open, high, low, and close prices. Download our sample file to see the exact format required.

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Identified Trends with Renko? Build Automated Strategies

Now that you've visualized clean price action with Renko charts, let Pineify's AI create automated Pine Script strategies that trade based on Renko brick patterns and reversals.

Try Pineify FreeExplore AI Stock Picker