Quick Answer

A market rises, then starts to fall. How much of that rise has it given back? Fibonacci retracement is a chart tool that answers that question. It marks prices at percentages of the earlier move, including 38.2%, 50%, and 61.8%. Traders watch those prices to see whether a pullback slows or continues. A line is not a prediction, and reaching one is not a reason on its own to trade.

What is Fibonacci retracement?
How does Fibonacci retracement work?
What are the main retracement levels?
How are the levels calculated?
A real NIFTY 50 example
How can traders use the levels?
Benefits and limitations
Fibonacci retracement vs extension
Common mistakes
Who is this tool useful for?
Conclusion
Frequently asked questions

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Fibonacci retracement measures how far a price has moved back after a rise or fall. That move back is called a retracement.
For a quick illustration, imagine a stock rising from ₹500 to ₹600 and then falling to ₹550. It has given back ₹50 of its ₹100 rise—a 50% retracement. The tool marks that halfway price and several other percentages on the chart.
After a rise, traders may watch these lines as possible support: areas where a fall might slow. After a decline, the lines may mark possible resistance: areas where a rebound might slow. The market does not have to stop at any of them.

Fibonacci retracement is part of technical analysis, which uses price charts to study market moves. It cannot tell you whether a company is financially strong or whether its shares are fairly valued.

How Does Fibonacci Retracement Work?

Find a clear move. Look for a noticeable rise from a low to a high, or a decline from a high to a low.
Mark the two prices. After a rise, draw the tool from the low to the high. After a decline, draw from the high to the low. Traders call these visible turning points swing points.
Read the lines. Each line shows a percentage of the move. After a rise, the lines below the high show prices the market would reach as it gives back part of that rise.
Watch what happens next. Does the fall slow, does the price start rising again, or does it keep dropping? The line tells you where to look; the price tells you what happened.

The two prices you select matter. Choosing a different high or low changes every calculated level.

What Are the Main Fibonacci Retracement Levels?

Charting tools commonly display 23.6%, 38.2%, 50%, 61.8%, and 78.6%. The 50% line is the halfway mark. It is often included, although it is not a ratio from the Fibonacci number sequence.

Level	What it means after a rise
23.6%	Price has given back a small part of the rise.
38.2%	It has given back a little over one-third.
50%	It has given back half.
61.8%	It has given back nearly two-thirds.
78.6%	It has given back most of the rise.

You may also see 0% and 100%. A full, 100% pullback after a rise would take the price back to where that rise began. Chart tools can display endpoint labels differently, so check the prices beside the lines.

These percentages describe the size of the move back. A 61.8% retracement does not mean there is a 61.8% chance of a reversal.

How Are Fibonacci Retracement Levels Calculated?

For a rise, first subtract the low from the high. Then subtract the chosen percentage of that move from the high:

Retracement price=High−(High−Low)×retracement percentage

You do not need to calculate each line while using a chart. The tool does it when you choose the high and low. The calculation is worth understanding, though, because it makes clear what a level does—and does not—tell you.

A Real NIFTY 50 Example

The NIFTY 50 touched an intraday low of 21,281.45 on 4 June 2024. It later reached an intraday high of 26,277.35 on 27 September 2024. The difference was 4,995.90 index points.

Draw a Fibonacci retracement from the June low to the September high, and the levels are:

Retracement	Calculation from 26,277.35	NIFTY 50 level
23.6%	26,277.35 − (4,995.90 × 0.236)	25,098.32
38.2%	26,277.35 − (4,995.90 × 0.382)	24,368.92
50%	26,277.35 − (4,995.90 × 0.50)	23,779.40
61.8%	26,277.35 − (4,995.90 × 0.618)	23,189.88
78.6%	26,277.35 − (4,995.90 × 0.786)	22,350.57

On 21 November 2024, the NIFTY 50 touched an intraday low of 23,263.15 and closed at 23,349.90. That day’s low was about 73 points above the calculated 61.8% level of 23,189.88.

The useful observation is that the index came close to a level calculated from an earlier move. It would be wrong to conclude that Fibonacci caused the market to stop falling, or that the same level would hold on another day. The June and September prices are points chosen for this historical example; another choice of chart points would give different lines.

Custom chart: The accompanying NIFTY 50 image marks the reported June low, September high, November low, and calculated retracement levels. It is a schematic connecting those three reported prices, not a day-by-day market chart. For the published article, place it alongside this example with that distinction in the caption.

How Can Traders Use Fibonacci Retracement Levels?

Suppose you were watching the NIFTY 50 fall after its September 2024 high. The calculated 50% and 61.8% prices would give you areas to check. At either area, the question would be: Is the fall slowing, or is the index moving straight through?

A trader could also check whether a retracement line sat near an earlier support area, a price area where a decline had previously slowed. Neither observation would settle what happens next.

There is an important distinction in the real example: NIFTY 50 values are index points, not someone’s profit or loss in rupees. To calculate a trader’s gain or loss, you would need to know what product they traded, how much they traded, and their actual entry and exit prices. The chart alone cannot supply those details.

Before placing a trade, a trader also needs to decide what would show their view was wrong. A Stop-loss is an order intended to exit at a chosen price, though the executed price can differ from the planned price. Fibonacci does not set that loss limit for you.

What Are the Benefits and Limitations?

Fibonacci retracement gives traders specific prices to watch instead of a vague plan to “check after a dip.” It also gives them a way to describe how deep a pullback is: giving back one-quarter of an earlier rise is different from giving back nearly three-quarters.

The tool has limits:

Your choice of points changes the result. Two traders can draw different levels on the same chart.
Price can cross any line. A market is not required to pause at 38.2%, 50% or 61.8%.
A chart does not explain the cause of a move. News and wider market conditions still matter.
A lower level is not a fresh buy signal. Buying each time price again falls to the next line can increase losses.

Fibonacci Retracement vs Fibonacci Extension

The two tools use related ratios but look at different parts of a move.

Question	Fibonacci retracement	Fibonacci extension
What does it examine?	A move back within an earlier rise or fall	Prices beyond an earlier rise or fall
When might it be used?	To watch a dip or rebound	To watch where a continuing move might reach
Does it predict a result?	No	No

A beginner can start with retracement. Identify one clear move, see where the lines fall, then observe what price does when it reaches them.

What Mistakes Should Beginners Avoid?

Choosing points that fit the result you want. Pick a clear price move before drawing the tool.
Trading as soon as a line is touched. Reaching a level tells you how far price has moved, not where it will go next.
Treating 61.8% as a price floor. It is commonly watched, but price can fall below it.
Calling a nearby turn is proof that the tool works. In the NIFTY example, the November low came close to a calculated level. One historical move does not establish a rule.
Ignoring the money at risk. Index points or chart percentages do not tell you your possible rupee loss.

If you are learning, draw the levels on past charts and look for examples where price crossed them as well as examples where it paused.

Who Is Fibonacci Retracement Useful For?

It is most relevant to traders who follow charts and want to study a pullback after a clear market move. It is less useful as the main basis for a long-term investment decision. If you are assessing a company’s business, finances, or valuation, a retracement line cannot answer those questions.

Conclusion

Fibonacci retracement measures how much of an earlier rise or fall the market has given back. The NIFTY 50 example shows the calculation using reported 2024 prices: its November low came close to the 61.8% level drawn from a June low and September high. That is an observation, not proof that the line predicted the low. Choose clear chart points, check what price actually does near a level, and decide how much you could lose before considering a trade. If price moves through the line, reassess rather than assuming the next one must hold.