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Renko vs candlestick charts: what changes when time disappears

A candlestick chart draws a new bar every few minutes, no matter what. A renko chart only draws a new brick when price moves a set amount. The chart looks much cleaner. The question is what got cleaned away.

Comparison · 6-minute read · Updated 2026-10-21

The short answer

A candlestick chart draws one candle per period of time. Each one shows the open, high, low and close for that period.

A renko chart ignores time. It draws a brick only when price moves a full "box size", say $1. Smaller moves don't show at all.

Renko makes trends easy to see. Candlesticks show what actually happened, including the wicks and the timing.

Side by side

How a renko brick forms

Say the box size is $1 and the last brick closed at $100.

• Price moves to $100.80. Nothing happens. Not a full $1.
• Price reaches $101. A new up brick appears from $100 to $101.
• Price drops back to $100.20. Nothing yet.
• For most renko settings, a down brick needs a full 2-box reversal: price must reach $99.

That last rule is why renko filters noise. It's also why a turn shows up late.

The box size can be fixed or based on ATR (the average bar size), which adjusts to how much the market moves.

Candlesticks: strengths and limits

The good parts:

• The full story. You see the open, high, low and close of every period.
• Wicks. Long wicks show where price was pushed away. See Wick.
• Time. You see when moves happened, like the open or a news release.

The limits:

• Noise. Many small bars mean nothing.
• Clutter tempts you. It's easy to see a pattern in every wiggle.

See how to read candlestick charts.

Renko: strengths and limits

The good parts:

• Clean trends. A run of same-colour bricks makes direction obvious.
• Calmer to watch. Fewer bricks, fewer decisions.
• Clear levels. Flat areas stand out.

The limits:

• No wicks. You can't see rejection at a level.
• No time. A brick can take 2 minutes or 2 days. You can't tell.
• Late turns. The reversal rule means you see the turn after it's already moved.
• The last brick can change. Until a brick is complete, what you see may not be final.
• Exact prices hidden. A brick at $101 doesn't mean price traded only to $101.

Which fits you?

1. Learning to read charts? Start with candlesticks. You need to see what really happened.
2. Getting lost in noise? A renko chart beside your candle chart can show the clean trend, while you still plan the trade on candles.
3. Placing stops? Use candlesticks. The stop goes past the real level, and real wicks matter.

Our method uses candlesticks for one reason: only a candle body closing past a level counts, and renko has no bodies or wicks to judge that by.

Common mistakes

• Trusting a renko backtest. The fills shown may not be possible.
• Setting a stop from a brick. The brick isn't the real low.
• Changing the box size until the chart looks perfect. That's fitting the chart to your hopes.
• Forgetting time. A slow week and a fast minute can look the same.

Questions