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About Fibonacci Retracement Calculator Online
This tool draws the standard Fibonacci retracement levels — 23.6%, 38.2%, 50%, 61.8%, and 78.6% — between any high and low price you specify. These levels are widely watched by technical traders as potential support and resistance zones after a market move.
Fibonacci retracements are based on the Fibonacci sequence, where ratios between consecutive numbers approach the golden ratio (0.618). Although their mathematical relevance to markets is debated, their influence is real because so many traders watch them — orders cluster around these levels, creating self-fulfilling support and resistance.
Enter a recent swing high and swing low, and the tool computes each retracement price. Use the levels to identify potential entry zones after a pullback or to place stop-loss orders just beyond a key level.
How to use this tool
How to compute Fibonacci retracement levels of a swing
Enter swing high
"Swing high" is the top of the move you want retraced. Pick the actual extreme of the leg you're studying — not an arbitrary candle high.
Enter swing low
"Swing low" is the bottom of the same move. The tool computes from high downward, so high should be > low for the levels to make sense as retracements of an up-move.
Press Run
Result returns levels for ratios 0, 0.236, 0.382, 0.5, 0.618, 0.786, 1, each with the corresponding price = high − (high − low) × ratio. Output prices are rounded to 6 decimals.
How to use the levels
0 = swing high (no retracement); 1 = swing low (full retracement); 0.5 and 0.618 are the most-watched bands. The tool is a chart helper — not a buy/sell signal.