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Fibonacci Retracement Calculator

Calculate Fibonacci retracement levels for support and resistance in trading. Works with any financial instrument and time frame.

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What Is a Fibonacci Retracement Calculator?

A Fibonacci Retracement Calculator helps traders identify potential support and resistance levels by measuring how far the price might retrace (pull back) from a significant move. It is one of the most popular tools in technical analysis for setting entry points, stop-losses, and take-profit targets.

Key Formulas

Retracement levels are derived from the price difference between swing high and swing low:

$$\text{Difference} = \text{Swing High} - \text{Swing Low}$$

$$\text{Uptrend Support}_{ratio} = \text{Swing High} - (\text{ratio} \times \text{Difference})$$

$$\text{Downtrend Resistance}_{ratio} = \text{Swing Low} + (\text{ratio} \times \text{Difference})$$

How to Use

  1. Identify a significant price move: Find a clear swing high and swing low on your chart.
  2. Enter the swing high and low: Input these values into the calculator.
  3. Review support/resistance levels: The calculator shows levels at 23.6%, 38.2%, 50%, 61.8%, and 78.6% retracement.
  4. Apply to your trading strategy: Use these levels for entries, exits, or stop-loss placement.

Understanding Fibonacci Retracement Levels

  • 23.6% (0.236): Shallow retracement, indicates strong trend
  • 38.2% (0.382): Common retracement in strong trends
  • 50% (0.500): Not a true Fibonacci ratio but widely watched
  • 61.8% (0.618): The golden ratio, most significant retracement level
  • 78.6% (0.786): Deep retracement, often signals trend weakness

Related Tools

For more trading tools, try our Fibonacci Extension Calculator and Swing Trading Calculator.

Frequently Asked Questions

What is the 61.8% Fibonacci retracement level?

The 61.8% retracement level is derived from the golden ratio (phi) and is considered the most significant retracement level. In a healthy trend, price often retraces to this level before continuing in the original direction. A break below 61.8% may suggest the trend is weakening.

What is the difference between uptrend and downtrend retracement?

In an uptrend, retracement levels act as support where price may bounce higher. In a downtrend, retracement levels act as resistance where price may reverse lower. The calculator shows both support and resistance values for each level.

Are Fibonacci retracements reliable?

Fibonacci retracements are widely used but work best when combined with other technical analysis tools such as trendlines, moving averages, and volume analysis. They are self-fulfilling to some degree because many traders watch these levels and place orders around them.

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