Last updated October 7, 2026 · Report an error
Fibonacci retracement levels are among the most widely used tools in technical analysis for identifying potential support and resistance levels after a price swing — though calculating six levels by hand for every price swing gets tedious fast.
This calculator finds all the standard Fibonacci retracement levels between a price high and low, with a full step-by-step solution.
How it works
Enter the high and low prices of a price swing, and choose whether the trend is an uptrend (retracing down from the high) or a downtrend (retracing up from the low). The calculator applies the standard Fibonacci ratios (23.6%, 38.2%, 50%, 61.8%, 78.6%) to the price range to find each retracement level.
- Enter high price.
- Enter low price.
- Enter trend direction.
- Click Calculate to see your results.
Examples
A retracement from 150 down to 100
For an uptrend swing from a low of 100 to a high of 150, the key 61.8% retracement level is 119.1 — a price often watched as potential support before the trend resumes.
Who should use it
- Identifying potential support or resistance levels after a significant price swing.
- Planning entry or exit points around key retracement levels in technical trading.
Industry applications
- Technical analysis and trading
- Financial market education
Advantages
- Calculates all five standard retracement levels in one step.
- Includes a complete, formula-based step-by-step solution.
Limitations
- Retracement levels are probabilistic technical analysis tools, not guarantees of price behavior.
Common mistakes to avoid
- Choosing the wrong trend direction, which flips every retracement level to the wrong side of the price range.
- Treating retracement levels as guaranteed reversal points rather than areas of increased probability.
Best practices
- Use Fibonacci retracement levels alongside other technical indicators or price action signals, rather than as a standalone trading signal.
Tips
- Combine Fibonacci retracement levels with other confirmation signals (like volume or candlestick patterns) rather than trading off the level alone.