Renko charts, free.
Renko is free on Basis with no account and no trial. Bricks are sized from average true range and follow the real reversal rule, which matters more than the price of the feature.
What you get
- Brick size derived from ATR, so it adapts to the instrument instead of needing a manual number
- The genuine two-box reversal: a brick against the trend needs twice the move of one continuing it
- Bricks anchored to a price grid, so the same price lands on the same boundary across reloads
- A synthetic time axis that covers the real period the bricks describe
- Indicators computed on the bricks themselves rather than on the candles underneath them
Why this is usually paid for
Renko is widely offered, but frequently offered wrong. The common shortcut prints a brick on any move of one box in either direction, which is not Renko at all — it is a rounded line chart, and it puts back exactly the noise the type exists to remove.
The reversal rule is what makes Renko worth using, so Basis implements it properly and verifies it against the definition rather than against itself. That is free, and so is everything else here.
How to use it
- 1
Open a Renko chart
The button below opens the terminal with Renko already selected. The brick size is computed from recent ATR, so it is already scaled to whatever instrument you are looking at.
- 2
Expect fewer bars than candles
Renko compresses heavily — roughly nine hourly candles to one brick on a typical crypto market. A quiet week can produce no bricks at all. That compression is the point: what remains is movement large enough to matter.
- 3
Use it for trend, not for timing
A brick only prints once price has already moved a full box, so Renko is always late by construction. It is good at showing whether a trend is intact and poor at telling you when it started, and it should be paired with something that carries the timing.
Questions
Why does Renko show fewer bars than the candle chart?+
Because a brick represents a distance travelled rather than a period elapsed. Time with no movement produces no bricks, and a violent hour can produce several. Around nine hourly candles collapse into one brick on a typical crypto market, which is the compression the chart type exists to provide.
What does the two-box reversal rule mean?+
A brick continuing the current direction needs one box of movement. A brick reversing it needs two, and opens where the previous brick opened. Without that rule any wiggle prints a brick and the chart loses the noise filtering that is its whole purpose.
Do indicators work correctly on Renko?+
On Basis they are computed on the bricks rather than on the underlying candles, which is what makes them line up. A moving average calculated on hourly candles and drawn over a brick chart is measuring a different series from the one on screen, and the two cannot correspond.
Are the dates on a Renko chart real?+
The axis is synthetic, because bricks have no duration. Basis spaces them evenly across the real period they describe and anchors both ends to real bars, so the chart covers the correct span and the newest brick sits at now. Individual brick dates in the middle are interpolated.
Open it and see
The chart opens with this already turned on. Nothing to configure, nothing to sign up for.
Open the chartAlso free
Updated 2026-08-23 · Indicator reference · Documentation · Terminal