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Home Page > Financial Calculators > Investment Calculators

Fibonacci Extension Calculator

Project price levels beyond an initial move in MiniWebtool’s Fibonacci Extension Calculator. Three A-B-C points define extension targets on the selected scale; these are technical-analysis reference levels rather than predictions of future prices.

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A 100, B 150, C 125: targets 155.9, 175 and 205.9

Enter points A, B and C of the move. The result gives the Fibonacci extension targets.

A
Impulse Start
B
Impulse End
C
Retracement End

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About Fibonacci Extension Calculator

Welcome to the Fibonacci Extension Calculator, a professional trading tool that calculates Fibonacci extension levels for identifying profit targets beyond the original price movement. Unlike retracement calculators that find levels within a move, this tool uses the 3-point ABC wave method to project potential price targets for taking profits in trending markets.

At a Glance

The Fibonacci Extension Calculator projects price levels beyond an initial move from three points, A, B and C. It lists seven extension levels from 61.8% to 423.6% as reference targets, not predictions.

Fibonacci Extension Calculator: features at a glance
FeatureWhat you getGood for
Three-point inputEnter point A (start of the move), point B (end of the move) and point C (end of the pullback). Point C must lie between A and B.Traders who have already marked an A-B-C wave on a chart
Seven extension levelsLevels at 61.8%, 100%, 127.2%, 161.8%, 200%, 261.8% and 423.6% of the A-B distance, measured from point C.Listing possible profit-target zones beyond the first move
Bullish and bearishThe trend is detected automatically. Bullish levels are C + |B - A| x ratio; bearish levels are C - |B - A| x ratio.Uptrends and downtrends with the same inputs
Retracement percentageShows how deep the pullback from B to C was, as a percentage of the A-B move.Judging how shallow or deep a pullback was before the levels
Wave diagramAn interactive A-B-C wave drawing marks each extension level as the result updates.Seeing where each level sits relative to the wave
Copy and stepsCopy a single level or all levels at once. A step-by-step breakdown shows each calculation, with a choice of decimal places.Moving levels into a trading platform or checking the arithmetic

What is Fibonacci Extension?

Fibonacci extension (also called Fibonacci expansion or projection) is a technical analysis tool used to predict potential price targets beyond the original price movement. While Fibonacci retracement helps identify entry points during pullbacks, extensions help traders set realistic profit targets when the trend resumes.

Extension levels are derived from the Fibonacci sequence ratios: 61.8%, 100%, 127.2%, 161.8%, 200%, 261.8%, and 423.6%. These levels project where price might travel after completing a retracement and resuming its original trend direction.

Fibonacci Extension vs. Retracement: Key Differences

Fibonacci Extension Calculator: Fibonacci Extension vs. Retracement: Key Differences
AspectRetracementExtension
PurposeFind support/resistance within a moveProject profit targets beyond a move
Input Points2 points (High and Low)3 points (A, B, C wave pattern)
Common Levels23.6%, 38.2%, 50%, 61.8%, 78.6%61.8%, 100%, 127.2%, 161.8%, 261.8%
Trading UseEntry points during pullbacksExit points for taking profits
Level LocationWithin the original price rangeBeyond the original price range

The ABC Wave Pattern Explained

Fibonacci extensions use a 3-point ABC wave pattern to calculate price projections:

  • Point A (Impulse Start): The beginning of the initial price movement. In an uptrend, this is the swing low; in a downtrend, this is the swing high.
  • Point B (Impulse End): The end of the initial impulse wave. In an uptrend, this is the swing high; in a downtrend, this is the swing low.
  • Point C (Retracement End): Where the price pullback ends before resuming the trend. This point must be between A and B.

The A→B wave represents the initial impulse move, B→C represents the retracement (pullback), and extensions project from C using the A-B distance as the measurement base.

Fibonacci Extension Formula

Bullish Extension
$$\text{Extension Level} = C + (|B - A| \times \text{Ratio})$$
Bearish Extension
$$\text{Extension Level} = C - (|B - A| \times \text{Ratio})$$

Key Fibonacci Extension Levels

Fibonacci Extension Calculator: Key Fibonacci Extension Levels
LevelDescriptionTrading Significance
61.8%First extensionInitial target, often used for partial profit taking
100%Equal movePrice travels the same distance as A-B from Point C
127.2%Common targetFrequently hit target in moderate trends
161.8%Golden extensionMost significant level, derived from golden ratio
200%Double movePrice travels twice the A-B distance from C
261.8%Extended targetReached in strong trending markets
423.6%Maximum targetExtreme target for parabolic moves

How to Use This Calculator

  1. Enter Point A: Input the price where the impulse wave began (swing low in uptrend, swing high in downtrend).
  2. Enter Point B: Input the price where the impulse wave ended (swing high in uptrend, swing low in downtrend).
  3. Enter Point C: Input the price where the retracement ended. This must be between A and B.
  4. Select Decimal Precision: Choose how many decimal places to display.
  5. Calculate: Click the button to see all Fibonacci extension levels with visual representation.
  6. Copy Levels: Use the copy buttons to transfer levels to your trading platform.

Trading Strategies with Fibonacci Extensions

Setting Profit Targets

  • Use 100% extension as your first profit target for conservative trades
  • The 161.8% (Golden Extension) is the primary target for most swing trades
  • Consider scaling out: take 50% profit at 100%, remaining 50% at 161.8%
  • In strong trends, extend targets to 261.8% or higher

Combining with Other Indicators

  • Fibonacci Retracement: Use retracement to find entry at Point C, then use extensions for targets
  • Moving Averages: Extensions near key MAs provide stronger targets
  • Previous Support/Resistance: Extensions that align with historical levels are more significant
  • Volume Analysis: Watch for volume increase as price approaches extension levels

Risk Management Tips

  • Always use a stop loss below Point C (bullish) or above Point C (bearish)
  • The risk-reward ratio improves when targeting higher extension levels
  • Consider the retracement depth: shallow retracements (38.2%) often lead to stronger extensions
  • Trailing stop losses can be placed at previous extension levels as price advances

Frequently Asked Questions

What is Fibonacci Extension?

Fibonacci extension is a technical analysis tool used to identify potential price targets beyond the original price movement. Unlike retracements which find levels within a move, extensions project targets outside the move, helping traders set profit-taking levels. Common extension ratios include 61.8%, 100%, 127.2%, 161.8%, 200%, 261.8%, and 423.6%.

What is the difference between Fibonacci Extension and Retracement?

Fibonacci retracement identifies potential support/resistance levels WITHIN an existing price move (used for finding entry points during pullbacks). Fibonacci extension projects potential price targets BEYOND the original move (used for setting profit targets). Retracements use 2 points (high/low), while extensions typically use 3 points (A-B-C wave pattern).

How do you calculate Fibonacci Extension levels?

To calculate Fibonacci extensions: 1) Identify Point A (start of impulse wave), Point B (end of impulse wave), and Point C (end of retracement). 2) Calculate the AB range: |B - A|. 3) For bullish setups, Extension Level = C + (AB Range x Ratio). For bearish setups, Extension Level = C - (AB Range x Ratio). Apply ratios like 1.618, 2.618 to find targets.

Which Fibonacci Extension level is most important?

The 161.8% extension (Golden Extension) is considered the most significant, derived from the golden ratio (phi). The 100% extension represents an equal move and is commonly watched. The 261.8% extension is important for strong trending markets. Many traders also watch the 127.2% level as an initial target.

What is the ABC wave pattern in Fibonacci analysis?

The ABC wave pattern consists of three points: A is the start of the initial impulse move, B is the end of the impulse move (swing high in uptrend, swing low in downtrend), and C is where the retracement ends and price resumes the original trend. Extensions are projected from Point C using the A-B distance as the measurement base.

How do I use Fibonacci Extensions for profit targets?

After identifying an ABC wave pattern, use extension levels to set profit targets. In a bullish setup, place sell orders near extension levels above your entry. Start with conservative targets (100%, 127.2%) and scale out at higher levels (161.8%, 261.8%). Consider taking partial profits at each level and trailing your stop loss as price advances.

Additional Resources

Reference this content, page, or tool as:

"Fibonacci Extension Calculator" at https://MiniWebtool.com/fibonacci-extension-calculator/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: Jan 17, 2026

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