Gann Square of 9 Calculator

What Is the Gann Square of 9 Calculator?

The Gann Square of 9 calculator is a free tool that projects support, resistance and potential reversal levels from a single price using W.D. Gann's angle-based Square of 9 method. Feed it today's traded price and it returns a set of levels above and below that price where the market has a statistically higher chance of pausing, reversing or accelerating.

It is a level-generation tool, not a standalone predictor. The Gann Square of 9 tells you where the market may react; it does not tell you whether it will actually reverse or break through at any given level. Traders use the output alongside price action, volume, and other confirming indicators — never as an isolated signal to enter or exit a trade.

How to Use the Gann Square of 9 Calculator?

To use the Gann Square of 9 calculator on Strike Money, follow the steps below.

1. Wait 30-60 minutes after market open: Let the day's price action settle instead of reacting to the opening print, which can be skewed by overnight gaps and the first few volatile minutes of trading.
2. Record the LTP or ATP: Note the Last Traded Price (LTP) or the Average Traded Price / Volume-Weighted Average Price (ATP/WAP) of the stock, index or instrument at that point.
3. Enter the price into the calculator: Type this price into the "Current Market Price" field above.
4. Read the levels as you type: There is no Calculate button — resistance and support across all eight angles of the Gann wheel recompute on every keystroke.
5. Plan your trades around the levels: Use the nearest levels above and below the current price as reference points for entries, stop-losses and targets, combined with your usual chart-based confirmation.

Worked example: Suppose Reliance Industries is trading at ₹1,480 about an hour after market open. A trader entering ₹1,480 into the calculator gets a ladder of levels above and below this price — for this walkthrough, illustrative rounded levels of roughly ₹1,465 and ₹1,450 as nearby support, and roughly ₹1,495 and ₹1,510 as nearby resistance, work well to demonstrate the process. (These are illustrative, rounded figures for the walkthrough — the exact levels the calculator above returns for any given price depend on the precise formula and angle, not on rounding.) With these levels in hand, the trader can plan a long entry near support with a stop just below ₹1,450 and a target near ₹1,495, or watch for a rejection at resistance to plan a short.

What Is the Gann Square of 9?

The Gann Square of 9 is a spiral arrangement of natural numbers (1, 2, 3, 4...) starting from 1 at the centre and winding outward in a square spiral, with each full rotation adding a ring of numbers around the previous one. Because the spiral is built on square roots, numbers that sit on the same angular position across different rings — the same "ray" of the spiral — turn out to be mathematically related through their square roots, which is what lets the method translate an angle into a price level.

Two sets of angles matter most on this wheel:

• The cardinal cross — 0°, 90°, 180° and 270° — represents the strongest reaction levels.
• The ordinal cross — 45°, 135°, 225° and 315° — represents secondary, comparatively weaker reaction levels.

A full 360° rotation around the wheel brings you back to the same ray you started on, one ring further out — Gann treated this as one complete price cycle, with the 360° level marking where that cycle closes.

Who Invented the Gann Square of 9?

The Gann Square of 9 was invented by William Delbert Gann (W.D. Gann), an American market forecaster and trader active in the early-to-mid 20th century. Gann believed that markets moved in predictable geometric and time-based patterns, and he combined mathematics, geometry and astrology in an attempt to find the exact angles and time cycles he thought governed price behaviour. The Square of 9 was one of several tools he built to translate this belief into concrete, tradable price levels — and it remains one of his most widely used methods today.

The Gann Square of 9 Formula

The calculator above uses the following formula to project each level:

New Level = (√P ± θ/180)²

Here,

• P = the current market price or average traded price you enter
• θ = the angle, in degrees, travelled around the Gann wheel (45°, 90°, 135°, 180°, 225°, 270°, 315° or 360°)
• + projects a resistance level above the entered price
• − projects a support level below the entered price

Worked check: For P = ₹100 and θ = 90°, √100 = 10.

• Resistance = (10 + 90/180)² = (10.5)² = ₹110.25
• Support = (10 − 90/180)² = (9.5)² = ₹90.25

The calculator repeats this same calculation for all eight angles — 45°, 90°, 135°, 180°, 225°, 270°, 315° and 360° — to build the full ladder of levels shown in the output table above.

What Price Should You Enter?

Enter the LTP (Last Traded Price) or the ATP/WAP (Average Traded Price / Volume-Weighted Average Price), recorded roughly 30-60 minutes after the market opens.

Do not enter:

• The opening price — the first few minutes of trading are typically the most volatile part of the session and can be distorted by overnight gaps, pre-market orders and early algorithmic activity, which skews every level derived from it.
• The previous day's closing price — this ignores whatever gap or reaction has already played out at today's open, so the levels it produces no longer reflect the current session.

Waiting for the price to settle for half an hour to an hour gives you a more representative anchor price, and therefore a more reliable set of Gann levels for the rest of the session.

How Do You Use Gann Levels for Intraday Trading?

For intraday trading, Gann Square of 9 levels work best on a shorter timeframe with clear confirmation rules.

• Use a 5-minute chart: This timeframe is granular enough to react to individual Gann levels without producing excessive noise.
• Enter only on candle close past a level: Wait for a 5-minute candle to close beyond a Gann level before entering, rather than reacting to an intraday wick — this filters out false breakouts that pierce a level and immediately reverse.
• Place your stop-loss at the nearest Gann level: For a long entry, place the stop just below the nearest support level; for a short entry, place it just above the nearest resistance level.
• Target the next Gann level: Book profits, partially or fully, as price approaches the next level in the sequence rather than an arbitrary price or percentage target.
• Combine with VWAP and RSI: Use the Volume-Weighted Average Price and the Relative Strength Index as additional confirmation — a Gann level that coincides with VWAP or an RSI extreme carries more weight than one considered in isolation.

How Do You Use Gann Levels for Swing and Positional Trading?

Swing and positional trading unfolds over days to weeks, so an intraday LTP is not a meaningful anchor for that horizon. Instead:

• Anchor to swing highs and lows: Enter a recent, well-defined swing high or swing low from the daily or weekly chart into the calculator instead of today's intraday price.
• Read the levels as a broader map: The resulting Gann levels act as zones to watch over the following days or weeks rather than levels expected to react within the same session.
• Recompute as new swings form: As price makes a fresh swing high or low, recalculate from that new pivot to keep the levels relevant to the current trend structure.

Which Markets Work Well with the Gann Square of 9?

The Gann Square of 9 is used across several market types, with a few practical notes for each.

• Equities: Works well for individual stocks, especially liquid, actively traded names where round-number psychological levels tend to coincide with Gann levels.
• Indices: Benchmarks such as Nifty and Bank Nifty tend to respond well, since a large number of participants watch similar levels, which can reinforce reactions at those points.
• Commodities: Works reasonably well, but requires care with scaling — commodities span very different price magnitudes (for example, crude oil versus gold), so the same angle can imply a very different percentage move depending on the instrument.
• Forex: Usable, but currency pairs are quoted to four or five decimal places, so small scaling or decimal-placement errors can throw off the projected levels more easily than with equities.
• Crypto: Used by some traders, but the much higher volatility of crypto assets makes any single support/resistance method, including this one, considerably less reliable on its own.

Limitations of the Gann Square of 9

The Gann Square of 9 is a useful reference tool, but it has real limitations worth keeping in mind.

• Subjective pivot selection: Choosing the LTP, the ATP, or a particular swing high or low as your anchor price is a judgment call, and different choices produce different sets of levels.
• Scaling and decimal errors: Applying the same angle-based method across markets with very different price magnitudes (a ₹50 stock versus a ₹50,000 index versus a forex pair quoted to four decimals) can introduce scaling mistakes that distort the levels.
• No account for news or fundamentals: The method is purely price- and angle-based; it does not factor in earnings, macroeconomic data, or other fundamental developments that can override any technical level.
• Unreliable as a standalone stop-loss mechanism: A Gann level on its own is not a guarantee that price will react there, so relying on it exclusively for stop-loss placement, without other confirmation, carries real risk.
• Risk of overtrading: With eight levels generated per price, it is tempting to trade every single one; treating each level as an automatic, high-probability trade setup increases the risk of overtrading.

Cardinal Cross vs Ordinal Cross: What's the Difference?

Gann Square of 9 vs Gann Angles: What's the Difference?

The Gann Square of 9 and Gann Angles are both part of W.D. Gann's broader trading method, but they measure different things.

The Gann Square of 9, as calculated above, is price- and angle-based: it takes a single price and projects a ladder of support and resistance levels around it using the square-root spiral, with no reference to time.

Gann Angles, by contrast, are diagonal trend lines that relate price to time on a chart. The best-known example is the 1x1 angle, which represents one unit of price movement for every one unit of time and is treated as a key trend-defining line — price holding above a rising 1x1 angle is read as a sign of a strong uptrend, while a break below it signals potential trend weakness. Other Gann Angle ratios (2x1, 1x2, and so on) represent faster or slower rates of price movement relative to time.

In short, the Square of 9 answers "at what price might the market react?", while Gann Angles answer "at what point in time, relative to price, might the trend change?" — traders often use both together rather than relying on either alone.