Fibonacci Retracement Calculator - Price Levels

A Fibonacci retracement calculator maps percentage distances across a selected price swing. Technical analysts commonly mark 23.6%, 38.2%, 50%, 61.8%, and 78.6% between a significant low and high, then watch those prices as possible support or resistance during a pullback. The Fibonacci retracement calculator performs the arithmetic consistently for stocks, exchange-traded funds, futures, foreign exchange, or cryptocurrency prices. For an uptrend, the calculation begins at the swing high and subtracts the high-low range multiplied by each ratio. For a downtrend, it begins at the swing low and adds the same ratio of the range. A rise from 100 to 120 has a range of 20; its 38.2% bullish retracement is 120 minus 20 times 0.382, or 112.36. The 50% level is widely plotted even though one-half is not itself a Fibonacci ratio. These levels identify reference prices, not probabilities or guaranteed turning points. Traders may look for confluence with prior highs, moving averages, volume, trend lines, gaps, or momentum. The choice of swing endpoints has a large effect: two analysts can select different highs and lows and obtain different levels while both calculations are mathematically correct. Consistent rules for identifying a completed impulse move make comparisons more useful. Use the trend selector to orient the levels correctly and custom percentages when a strategy uses alternatives such as 20%, 40%, 60%, or 80%. More decimal precision may be relevant for foreign exchange, while tick size and price increments matter for tradable orders. A level can help plan an alert, entry zone, stop review, or profit target, but execution should account for spreads, liquidity, volatility, and slippage. Fibonacci analysis is descriptive technical analysis and does not establish intrinsic value or predict market direction. Prices can reverse before a level, pass through every level, or gap beyond them. Backtests can be affected by hindsight in swing selection and ignored transaction costs. Combine retracement levels with a defined risk limit, independent evidence, and position sizing. The retracement output supplies transparent price coordinates; it does not recommend a security or trade.