Fibonacci Calculator

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About Fibonacci Calculator

Fibonacci Calculator derives retracement and extension levels from a price swing, giving traders a quick reference for the ratios, 23.6%, 38.2%, 50%, 61.8%, 78.6%, and extensions like 161.8%, widely used in technical analysis.

Retracement levels, drawn between a swing high and low, mark price areas where a pullback might pause or reverse, with the 61.8% 'golden ratio' the most closely watched. Part of their influence is self-fulfilling: because so many traders act around these levels, orders cluster there and reactions can reinforce themselves.

The crucial caveat is that these are reference zones, not predictions. Price is under no obligation to respect any Fibonacci level, and the technique works best as one input alongside trend, volume, and traditional support/resistance, not as a standalone signal. The output is an analysis aid, not trading advice.

Extension levels project beyond the original move to estimate targets if the trend continues. Accurate levels depend on choosing clear, significant swing points as anchors. Everything runs in your browser, so your figures stay private. Pair it with the other ToolsMonk stock and trading calculators for fuller analysis.

Fibonacci Calculator at a glance
PriceFree, no signup, no paywall, no watermark
Works onAny modern browser: desktop, tablet, and mobile
ProcessingIn your browser, files never leave your device
Account requiredNone
CategoryBusiness Tools

Steps to Use Fibonacci Calculator

Enter the swing high and swing low of the price move

Indicate the trend direction (up or down)

The tool calculates the retracement and extension levels

Use the levels as reference zones in your analysis

Key Fibonacci Calculator Capabilities

Calculates Fibonacci retracement and extension levels from a price swing

Takes a swing high and swing low to derive key levels

Outputs the common ratios (23.6%, 38.2%, 50%, 61.8%, 78.6%, and extensions)

A quick reference for technical analysis and trade planning

Runs in your browser, your figures stay on your device

Free, with no signup and no limit on calculations

Who Uses Fibonacci Calculator, and Why

Finding potential support/resistance levels for a stock or forex move

Planning entries, targets, and stops around Fibonacci levels

Identifying retracement zones during a pullback

Projecting extension targets beyond a prior swing

Fibonacci Calculator Tips for Best Results

  • Use Fibonacci levels as zones of interest confirmed by other signals, never as a standalone buy/sell trigger

  • Watch the 61.8% level closely on pullbacks; it's the most-respected retracement among traders

  • Pick clear, significant swing highs and lows, sloppy anchor points produce meaningless levels

Frequently Asked Questions About Fibonacci Calculator

Common questions about this tool, its workflow, and what to expect before you use it.

Enter the swing high and swing low and choose the trend direction. The Fibonacci Calculator works out the 23.6, 38.2, 50, 61.8 and 78.6 percent retracement levels between them, showing the price at each level and highlighting the golden zone around 61.8 percent.

Yes. Alongside retracements it calculates extension levels at 127.2, 161.8, 200 and 261.8 percent, which traders use to estimate targets if the trend carries past its previous swing. All levels appear together in one table.

In an uptrend the levels measure a pullback from the high, and in a downtrend they measure a rally from the low. Choosing the right direction places each level on the correct side of the move, so the prices match how you are reading the chart.

No. They mark zones that many traders watch, not forecasts, and price can pass straight through them. Use them with trend, volume and support and resistance. Quick starts for Bitcoin, EUR/USD and the S&P 500 show examples, and this is not trading advice.

No. The Fibonacci levels are calculated in your browser from the high and low you enter, and nothing is sent to a server. You can copy a summary of the levels as text. The calculator is free with no signup.

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Fibonacci Calculator
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