Compute Fibonacci retracement levels between a swing high and low.
Please do not make financial decisions based on these results.
What is the Fibonacci Retracement Calculator?
Compute Fibonacci retracement levels between a swing high and low. To use the Fibonacci Retracement Calculator, enter swing high, swing low; it returns 38.2% level, 50% level, 61.8% level, 23.6% level and more, and shows them instantly as you type.
Where the Fibonacci Retracement Calculator fits
Compute Fibonacci retracement levels between a swing high and low. The main figure it returns is the 38.2% level, worked out from the values you enter.
It belongs with the other business & everyday tools tools. If you are comparing options or checking a result from another angle, try the Pivot Point Calculator, Relative Strength Index Calculator (RSI) or the Combined Ratio Calculator.
How to use the Fibonacci Retracement Calculator
- Fill in the fields. You will need Swing high, Swing low. Use real figures from your own records where you can. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the 38.2% level, and the cards below show 50% level, 61.8% level, 23.6% level. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the Fibonacci Retracement Calculator using the default values shown in the calculator above:
Inputs
| Swing high | 120 |
|---|---|
| Swing low | 90 |
Results
| 38.2% level | 108.54 |
|---|---|
| 50% level | 105 |
| 61.8% level | 101.46 |
| 23.6% level | 112.92 |
| 78.6% level | 96.42 |
With these inputs the calculator returns 38.2% level: 108.54. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Swing high from 120 to 144 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| 38.2% level | 108.54 | 123.37 | +13.7% |
| 50% level | 105 | 117 | +11.4% |
| 61.8% level | 101.46 | 110.63 | +9% |
| 23.6% level | 112.92 | 131.26 | +16.2% |
| 78.6% level | 96.42 | 101.56 | +5.3% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the Fibonacci Retracement Calculator reports 38.2% level, 50% level, 61.8% level, 23.6% level and 78.6% level. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
How are Fibonacci levels used?
Traders watch them as possible support and resistance during pullbacks.
What is the difference between margin and markup?
Margin is profit divided by the selling price. Markup is profit divided by cost. A 50% markup equals a 33% margin.
Can I rely on these for tax filing?
No. Use them for estimates and quick checks. For filings, use official forms and guidance or a professional.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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