What are Fibonacci retracements?

Horizontal price levels at 23.6%, 38.2%, 50%, 61.8% and 78.6% of a recent swing — used as potential support (in uptrends) or resistance (in downtrends) where pullbacks may pause or reverse. The 50% level isn't a real Fibonacci ratio but is included by convention.

What are Fibonacci extensions?

Levels beyond 100% of a swing (127.2%, 138.2%, 161.8%, 261.8%) used as profit-target projections. The 161.8% level (the golden ratio) is the most-watched extension target.

Should I use Fibonacci on its own?

No. Fib levels work best as confluence with other tools — moving averages, prior swing highs/lows, trend lines or volume nodes. Used alone they generate too many false signals.

Fibonacci calculator FREE

Q: How is the swing chosen?

Pick a clear, recent move — e.g. the rally from a swing low to a swing high in an uptrend. The bigger and cleaner the swing, the more meaningful the levels. Trend direction is auto-detected from which value you marked as high vs. low.

Drop in a swing high and swing low — get retracement support / resistance levels (23.6%, 38.2%, 50%, 61.8%, 78.6%) and extension targets (127.2%, 161.8%, 261.8%) instantly. Trend direction auto-detected.

The swing

Pick a clear, recent swing on your chart. The bigger and cleaner the swing, the more meaningful the levels.

Swing high (₹)

Swing low (₹)

Direction

Current price (optional)

Uptrend — retracements act as support, extensions as upside targets.

Quick presets

In an uptrend, retracements are potential support as price pulls back. In a downtrend, they're potential resistance on bounces.

Level	Price	Δ from current

Extension levels project beyond 100% of the swing — useful as profit-target projections when trend resumes. The 161.8% level (★) is the golden ratio and the most-watched.

Level	Price	Δ from current

Visual stacking of retracement + extension levels. Bar length scales by distance from the swing low.

The Fibonacci sequence — each number is the sum of the previous two. Ratios between successive numbers approach 1.618 (the golden ratio). The retracement/extension percentages are derived from these ratios:

23.6% = 1 / 1.618³ · 38.2% = 1 / 1.618² · 61.8% = 1 / 1.618 · 161.8% = 1.618 · 261.8% = 1.618² + 1.

Why Fibonacci levels matter

Fibonacci ratios appear throughout nature — leaf spirals, sunflower seed counts, nautilus shells. Whether they're "magic" in markets is debated, but enough traders watch them that they become self-fulfilling: when many participants place stops or targets at 61.8%, price action genuinely tends to react there. The level is real because the herd watches it.

How to read the levels

Shallow retracements (23.6%, 38.2%) — strong trends. Buyers / sellers step in early.
Deep retracements (61.8%, 78.6%) — weaker trends. If price breaks 78.6%, the original move is questionable.
50% retracement — not a Fibonacci ratio mathematically, but historically respected. Acts like a default psychological midpoint.
Extensions 127.2%, 161.8%, 261.8% — used to set targets beyond the original move. 161.8% is the most popular profit-target.

Use cases

Pullback entries — buy on a dip to 38.2% or 61.8% in an uptrend, with stop just below the next level.
Target setting — for a swing breakout, project the 127.2% / 161.8% extension as the take-profit.
Position sizing — stop at next fib below entry; size the position so the rupee risk matches your account rule (use the position size calculator).
Confluence — fib levels gain strength when they align with moving averages, prior swing levels or volume profile high-volume nodes.

Limits

Fib levels work in trending markets and fail in choppy ranges. Many tools use multiple swings (the most recent vs. a longer-term anchor) and look for "confluence zones" where two or more swings produce overlapping levels. This calculator covers single-swing analysis — for confluence, run it twice with different anchors.

FAQ

Auto-detect picked the wrong direction. How do I override?

Use the Direction dropdown — set it explicitly to Uptrend or Downtrend. Auto-detect works on most clean swings but a heavily-extended candle near the high/low can confuse it.

Why is 50% included if it's not a real Fibonacci number?

Convention. Charles Dow's "half-back" theory pre-dates Fibonacci's adoption in markets — when traders started using Fib retracements they kept the 50% level for continuity. Drop it from your analysis if you want to be a purist.

What about time Fibonacci?

Some traders forecast turning-point dates by counting bars/days in Fibonacci ratios from a swing pivot. This calculator focuses on price levels — time analysis needs a chart and is harder to abstract.

Does the order of high vs. low matter?

Mathematically no — the magnitudes are absolute. But it controls whether retracements are computed downward (uptrend pullback) or upward (downtrend bounce). Auto-detect handles this via the side most likely to "act" in the current state of the market.

Fibonacci calculator FREE