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Gann box

A Gann box is a rectangle between two corners, usually a major low and a high (or a time target), divided in price and in time at 0.25, 0.382, 0.5, 0.618 and 0.75, with its two diagonals. It shows where a swing's key fractions lie in both dimensions at once.

What it's for
  • Divide a swing into fractions of its price range and of its duration at the same time.
  • Mark the middle (0.5) of a range in price and in time, where reactions are watched.
Plus and Pro toolTry it in Analyze
Points
2 opposite corners
Plan
Plus and Pro
Divisions
0.25 · 0.382 · 0.5 · 0.618 · 0.75
Also drawn
Both diagonals

Construction and reading

Horizontal lines divide the box's price range, vertical lines divide its duration; the labels on the right are price fractions and those at the bottom time fractions. The 0.5 lines (drawn brighter) are the most important: Gann gave the 50% level of a range special weight, and the middle of the time window is a natural point to expect a turn.

Gann box from a swing low to the high's price, with the pullback holding the 0.5 price division
The box spans the advance's range in price and a time window that includes the pullback. The pullback stops exactly on the box's 0.5 price division, then the advance resumes.
  • Price levels inside the box act like retracement levels of the range.
  • Crossings of price and time divisions (where a level meets a time line) are watched as possible turning areas.
  • The diagonals give the average speed of the range; price above the rising diagonal is ahead of schedule.

How to draw it

  1. Choose Gann → Gann box.
  2. Click one corner (for example the major low), then the opposite corner (a high, or a later date at the high's price to include the reaction in the box).

Charts in this guide use simulated prices generated for illustration; levels and outcomes shown are examples, not observations of a real market. Educational content only, not investment advice.

Related guides

Gann fanPlusHow to draw a Gann fan from a major pivot, define the 1/1 angle in price per bar, and read the move from one angle to the next.Gann squarePlusHow the Gann square divides a price-time square into eighths with diagonals and arcs, and how analysts use it to time turning points.Fibonacci retracementHow to draw a Fibonacci retracement from the start to the end of a swing, what the 23.6%, 38.2%, 50%, 61.8% and 78.6% levels mean, confluence and invalidation.
Gann box: divide a swing into price and time fractions | Oyticker