Free Fibonacci Calculator for Traders
Quickly find potential support and resistance zones using Fibonacci retracement and extension levels.
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Frequently Asked Questions (FAQ)
Fibonacci retracement is a technical analysis tool that helps traders identify potential support and resistance levels during a price pullback. It’s based on key ratios derived from the Fibonacci sequence, such as 38.2%, 50%, and 61.8%.
At its core, Fibonacci retracement works on the idea that markets will often retrace a predictable portion of a move—before resuming their original direction. These retracement points are expressed as percentages of the prior price swing, with the most common levels being 23.6%, 38.2%, 50%, 61.8%, and 78.6%. The “golden zone” (between the 50% and 61.8% levels) is especially popular among traders for spotting potential reversal points.
A Fibonacci calculator can quickly generate these retracement or extension levels for you, helping to highlight potential areas of support and resistance. By applying these levels to your charts, you can spot high-probability trade setups and manage risk more effectively—no advanced math degree required.
Simply input your swing high and swing low, select the trend direction (uptrend or downtrend), and the tool will generate key retracement and extension levels instantly—no manual math required.
How the Calculator Works
The calculator uses the classic Fibonacci retracement and extension formulas to do the heavy lifting behind the scenes:
Retracement levels (23.6%, 38.2%, 50%, 61.8%, and 78.6%) are calculated by measuring the vertical distance between your chosen swing high and low. These percentages are then plotted to pinpoint likely support and resistance zones—potential turning points where price might stall or reverse.
Extension levels (such as 138.2%, 161.8%, and 261.8%) project possible targets beyond the original high or low, helping you set realistic profit objectives or spot where a move could run out of steam.
Example: If a stock rallies from $100 to $200, and then pulls back, the 50% retracement level would sit at $150. Extension levels can help you anticipate where the next leg might reach—like $261.80 for the 161.8% extension.
Why Use Fibonacci Levels?
Fibonacci levels give structure to price action—helping you plan entries, stop-loss placements, and profit targets with confidence. By automating the calculations, the tool ensures you never miss a critical level, no matter the market or timeframe.
Fibonacci extension levels help traders anticipate where a price move might run into resistance (in an uptrend) or support (in a downtrend)—ideal for mapping out profit targets.
Here’s how the calculations work for each direction:
For an uptrend:
-Identify the swing low, swing high, and the retracement low following the initial up move.
-Calculate the distance between the high and the low.
-Multiply this distance by the Fibonacci extension ratio (commonly 138.2%, 161.8%, or 261.8%).
-Add this result to the retracement low.
This gives you the extension price:
For a downtrend:
-Find the swing high, swing low, and the retracement high after the first leg down.
-Calculate the distance between the high and the low.
-Multiply by your chosen Fibonacci ratio.
-Subtract this result from the retracement high.
Apply these formulas on platforms like TradingView or MetaTrader, and you’ll find accurate price projections whether you’re long or short.
To find Fibonacci retracement levels during a downtrend, start by identifying the recent swing high and low points on your chart. Subtract the low from the high to get the total move, then multiply that difference by your chosen Fibonacci ratios (like 38.2%, 50%, or 61.8%). Add each result to the swing low. This gives you the key price levels where the market may experience resistance before potentially continuing downward.
To calculate Fibonacci retracement levels when prices are trending upward, start by pinpointing the most recent swing low and swing high on your chart. With those two points set, apply the Fibonacci retracement tool—either on your platform or manually. The tool will automatically plot horizontal lines at key ratios: common levels include 23.6%, 38.2%, 50%, 61.8%, and 78.6% below the swing high. These act as potential zones where price might pause or reverse during a pullback before the uptrend resumes.
While all levels have value, the most closely watched are the 38.2%, 50%, and 61.8% levels. The 50–61.8% range is often called the “Golden Zone” for its high-probability trade setups.
Yes. This calculator works for all liquid markets, including forex, stocks, commodities, and crypto—as long as there’s a defined trend and clear swing points.
Retracement levels help identify potential pullbacks within a trend. Extension levels are used to project profit targets beyond the original move, showing where price might go next.
How do Fibonacci Extensions work?
While retracements focus on where a pullback may pause, Fibonacci Extensions are about looking forward—predicting possible areas where price could extend after resuming its trend. Traders typically use three points: the start of the move, the end of the move, and the retracement point. The most common extension levels are 138.2%, 161.8%, and 261.8%.
For example:
If a stock moves from $100 to $200, then pulls back to $150, a trader looking at the 161.8% extension would project a possible target at $261.80. That’s the $100 move extended by 161.8% above the original high of $200.
Extensions are popular for setting profit targets because they help visualize where momentum might carry price beyond what’s already happened.
To find Fibonacci extension levels during a downtrend, start by identifying your swing high and swing low—just like you would for retracements. The math flips a bit: you’ll measure the distance from the swing high to the swing low, then multiply that by your chosen Fibonacci ratio (like 1.618 or 2.618 for common targets).
Here’s the step-by-step:
Find the swing high and swing low of the move you want to measure.
Calculate the price range: Subtract the swing low from the swing high.
Apply the extension ratio: Multiply this difference by the Fibonacci ratio (for example, 1.618).
Project from the retracement high: Subtract the result from the swing high.
So, your extension level = Swing High – (Swing High – Swing Low) × Fibonacci Ratio.
This quick formula helps pinpoint where price could find its next major target or stall out in an ongoing sell-off.
To find Fibonacci extension levels during an uptrend, start by identifying three key swing points on your chart:
-The initial swing low (point A)
-The swing high (point B)
-The pullback low after the high (point C)
Here’s how it works:
-Measure the distance between the swing low (A) and the swing high (B).
-Multiply that distance by your chosen Fibonacci extension ratio—popular ones include 138.2%, 161.8%, and 261.8%.
-Add the result to the pullback low (point C).
For example: If a price moves from $100 (low) to $200 (high), pulls back to $150, and you want the 161.8% extension:
The move from $100 to $200 is $100.
$100 × 161.8% = $161.80.
$150 + $161.80 = $311.80. So, $311.80 marks the 161.8% Fibonacci extension level above your pullback low.
These calculated levels act as potential profit targets or areas where price might react—especially when combined with other analysis tools.
Absolutely—Fibonacci levels are flexible and can be applied to charts ranging from the 1-minute tickers all the way up to monthly candles. However, many traders find these levels work best on higher timeframes like daily or weekly charts. The reason? Larger timeframes tend to smooth out market “noise” and offer more meaningful support and resistance zones, giving you a clearer read on the trend’s strength.
That said, day traders still use Fibonacci on shorter timeframes—just be sure to pair it with other indicators or confirmation signals to avoid getting faked out by random price blips.
Sometimes price action doesn’t play by the textbook. Traders use custom values to anchor Fibonacci retracements from alternative swing points — not just the most obvious high or low. For example, they might pick a minor pivot, gap fill, or notable reversal within a larger trend that stands out to them. This approach lets traders zero in on price levels that better reflect how real buyers and sellers have reacted in the market, rather than sticking rigidly to the main extremes. The result? More relevant Fibonacci levels tailored to the unique rhythm of that particular chart.
While Fibonacci can work on its own, combining it with tools like RSI, MACD, or candlestick patterns significantly improves accuracy through confluence.
Fibonacci isn’t a crystal ball, but it’s widely used by traders and algorithms—making the levels more likely to cause reactions due to collective behavior. Always confirm with price action or supporting indicators.
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