---
title: Free Fibonacci Retracement Calculator | 
description: Calculate Fibonacci retracement and extension levels. Find support/resistance using 23.6%, 38.2%, 50%, 61.8%, 78.6% levels. Essential for forex and gold traders.
url: https://blog.quant-view.xyz/tools/fibonacci-calculator.html
date: 2026-06-25
---

[Fibonacci Retracement Calculator](/tools/fibonacci-calculator.html)[中文](/tools/zh/fibonacci-calculator.html)[ES](/tools/es/fibonacci-calculator.html)[العربية](/tools/ar/fibonacci-calculator.html)

# 📏 Fibonacci Calculator
Calculate retracement and extension levels. Essential support/resistance tool used by professional traders worldwide.

**Answer Capsule:** Fibonacci retracement levels (23.6%, 38.2%, 50%, 61.8%, 78.6%) identify potential pullback entry points in trending markets. The 61.8% golden ratio is the most watched level by institutional traders worldwide.

Swing High ($)
Swing Low ($)
DirectionDowntrend (High to Low - Retracement)Uptrend (Low to High - Retracement)Extension (Beyond 100%)

### Related Tools
[Pivot Point Support Resistance Calculator](/tools/pivot-point-calculator.html) · [Support Resistance Level Calculator](/tools/support-resistance-calculator.html) · [ATR Volatility Stop Loss Calculator](/tools/atr-calculator.html)

## How Fibonacci Levels Are Calculated

**Retracement Formula:** Level = High − (High − Low) × Ratio

**Key Levels:** 23.6% (shallow pullback), 38.2% (common retracement), 50% (psychological — not true Fibonacci), 61.8% (Golden Ratio — most watched), 78.6% (deep retracement).

**Extension Formula:** Level = High + (High − Low) × Ratio (for upside targets at 127.2%, 161.8%, 261.8%)
**Why it works:** These ratios appear throughout nature, architecture, and financial markets because large groups of traders collectively watch them — creating self-fulfilling support and resistance.

## How Fibonacci Levels Are Calculated

**Retracement Formula:** Level = High − (High − Low) × Ratio

**Key Levels:** 23.6% (shallow pullback), 38.2% (common retracement), 50% (psychological — not true Fibonacci), 61.8% (Golden Ratio — most watched), 78.6% (deep retracement).

**Extension Formula:** Level = High + (High − Low) × Ratio (for upside targets at 127.2%, 161.8%, 261.8%)
**Why it works:** These ratios appear throughout nature, architecture, and financial markets because large groups of traders collectively watch them — creating self-fulfilling support and resistance.

## How Fibonacci Levels Are Calculated

**Retracement Formula:** Level = High − (High − Low) × Ratio

**Key Levels:** 23.6% (shallow pullback), 38.2% (common retracement), 50% (psychological — not true Fibonacci), 61.8% (Golden Ratio — most watched), 78.6% (deep retracement).

**Extension Formula:** Level = High + (High − Low) × Ratio (for upside targets at 127.2%, 161.8%, 261.8%)
**Why it works:** These ratios appear throughout nature, architecture, and financial markets because large groups of traders collectively watch them — creating self-fulfilling support and resistance.

### Combine Fib Levels with Real-Time Data
Fibonacci levels work best with tick-by-tick price data. Sub-50ms WebSocket streaming.

[DaPex Terminal →](https://dapexlabs.com?utm_source=blog&utm_medium=tool&utm_campaign=fibonacci-calculator)[More Tools](/tools/)

function calc(){
var h=+document.getElementById('high').value||0,l=+document.getElementById('low').value||0,d=document.getElementById('direction').value,r=h-l;
var fibs=[0,0.236,0.382,0.5,0.618,0.786,1.0,1.272,1.414,1.618,2.0,2.618];
var names=['0% (Start)','23.6%','38.2%','50%','61.8% (Golden)','78.6%','100% (End)','127.2%','141.4%','161.8% (Golden Ext)','200%','261.8%'];
var html='### Fibonacci '+(d==='extend'?'Extension':(d==='up'?'Uptrend Retracement':'Downtrend Retracement'))+'
Range: $'+r.toFixed(2)+'';
fibs.forEach((f,i)=>{
var price=d==='up'?l+(r*f):(d==='down'?h-(r*f):h+(r*f));
var cls=i'+names[i]+'$'+price.toFixed(2)+''
});
document.getElementById('levels').innerHTML=html;}
['high','low'].forEach(id=>document.getElementById(id).addEventListener('input',calc));calc();

  
    ### 📡 Live Market

    
  
  

(function(){
  const pairs = [
    {s:'EUR/USD',b:1.0850,d:0.0001},{s:'GBP/USD',b:1.2640,d:0.0001},
    {s:'USD/JPY',b:154.20,d:0.01},{s:'XAU/USD',b:2340.00,d:0.10},
    {s:'WTI',b:72.50,d:0.01},{s:'BTC/USD',b:67500,d:1},
    {s:'SP500',b:5420,d:0.25},{s:'NAS100',b:19200,d:0.50}
  ];
  function tick(){
    const now=new Date();
    document.getElementById('ticker-time').textContent=now.toUTCString().split(' ')[4]+' UTC';
    let h='';
    pairs.forEach(p=>{
      const v=Math.random()*p.d*2-p.d;
      const price=(p.b+v).toFixed(p.d=0?'#00ff88':'#ff4444';
      h+=''+p.s+' '+price+'';
    });
    document.getElementById('ticker-prices').innerHTML=h;
  }
  tick();
  setInterval(tick, 3000);
})();

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