Fibonacci Retracements and Extensions
How Fibonacci retracement and extension levels are calculated from a price swing, how traders use them for entries and targets, and why they need other evidence.
Fibonacci retracements and extensions are horizontal levels drawn from a price swing at fixed ratios. Retracements, at 23.6%, 38.2%, 50%, 61.8% and 78.6% of the swing, mark zones where a pullback might pause. Extensions, such as 127.2% and 161.8%, project beyond the swing and are often used as targets.
The ratios come from a famous number sequence, and that origin gives them an air of precision they do not deserve. Markets do not follow mathematics. Fibonacci levels are useful as a consistent way to measure pullbacks and plan targets, and they carry more weight when they line up with other evidence. This lesson shows the calculations step by step, a worked trade in USDT, and how to use the levels on Traders Portal.
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Where the numbers come from
The Fibonacci sequence starts 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, with each number the sum of the two before it. Divide any number by the next one and you approach 0.618 (55 ÷ 89 ≈ 0.618). Divide by the number two places on and you approach 0.382 (34 ÷ 89 ≈ 0.382), and three places on gives about 0.236. The extension ratios come from the same family: 1.618 is the inverse of 0.618, and 1.272 is its square root.
Two popular levels are not Fibonacci ratios at all. 50% is included because halfway pullbacks are widely watched, and 78.6% is the square root of 0.618. None of this proves the levels work. A likelier explanation is that many traders watch them, and that pullbacks of between a third and two thirds of a move are common anyway.
Calculating retracements
Pick a completed swing. In an uptrend, measure from the swing low to the swing high; the retracement levels sit below the high:
Level = swing high − (swing high − swing low) × ratio
In a downtrend, measure from the swing high to the swing low, and the levels sit above the low: Level = swing low + (swing high − swing low) × ratio.
| Ratio | Calculation | Level |
|---|---|---|
| 23.6% | 64,000 − 8,000 × 0.236 = 64,000 − 1,888 | 62,112 |
| 38.2% | 64,000 − 8,000 × 0.382 = 64,000 − 3,056 | 60,944 |
| 50% | 64,000 − 8,000 × 0.5 = 64,000 − 4,000 | 60,000 |
| 61.8% | 64,000 − 8,000 × 0.618 = 64,000 − 4,944 | 59,056 |
| 78.6% | 64,000 − 8,000 × 0.786 = 64,000 − 6,288 | 57,712 |
The range of the swing is 64,000 − 56,000 = 8,000, and every level is that range times a ratio, subtracted from the high.
Calculating extensions
Extensions are measured in two common ways, and charting tools label them differently, so check which one yours uses.
- From the swing. Add the range times the ratio to the swing low. For the same swing: 127.2% is 56,000 + 8,000 × 1.272 = 56,000 + 10,176 = 66,176, and 161.8% is 56,000 + 12,944 = 68,944.
- From the pullback. Wait for the pullback to end, then project the original swing from that point. If the pullback stops at 60,000, the 100% projection is 60,000 + 8,000 = 68,000, and the 161.8% projection is 60,000 + 12,944 = 72,944.
Extensions are guides for where to consider taking profit, not forecasts. Price can stop well short of them or run far past.
Choosing the swing
Fibonacci levels are only as good as the swing you anchor them to. Use clear, obvious highs and lows on the timeframe you trade, the kind other traders would pick too. Be consistent about using candle wicks or bodies. When price makes a new high, the swing has changed, so redraw.
The weakness is that two traders can anchor to different swings and get different levels. If you find yourself moving the anchors until the levels match where price turned, you are fitting the tool to the past, not preparing for the future.
A worked trade
A position has one take profit. If you want a second target, say the 127.2% extension at 66,176, you can open the trade as two positions of 0.025 BTC with different TP prices, or close part on desktop with the 25% and 50% buttons in Instant Trade. Scaling In/Out, Trailing Stops and Partial Take-Profit covers both.
Using Fibonacci on Traders Portal
- Read the swing high and low
Turn on the OHLC legend in the chart settings (the gear icon) and hover over the swing candles to read their exact high and low.
- Work out the levels
Apply the formulas above, or use the Fibonacci tool in a separate charting tool, since the trade chart has no drawing tools.
- Place the order
On the Limit / Stop tab, a buy price below the Ask becomes a Buy Limit and a sell price above the Bid becomes a Sell Limit. Turn on TP / SL and enter your stop and target prices.
- Adjust as the swing changes
On desktop, drag the pending order or its TP / SL lines on the chart if a new swing changes your levels. Remember that pending orders reserve margin as soon as they are placed.
Common mistakes
- Forcing Fibonacci onto every chart. Without a clear swing, the levels are arbitrary.
- Moving the anchors after the fact. Pick the swing before you look for reactions.
- Treating levels as exact. Think in zones; price often turns a little before or after a level.
- Ignoring the trend. Retracements are built for pullbacks within a trend. In a choppy range, they mean much less. Price Action Trading Without Indicators covers reading structure first.
Conclusion
Fibonacci retracements and extensions turn a price swing into a set of reference levels: retracements for pullback entries, extensions for targets. The arithmetic is simple, the range times a ratio, added or subtracted. What matters more is choosing clear swings, treating levels as zones and looking for confluence with support, resistance and structure. The ratios have no special power over markets, so use them to plan entries, stops and targets, and let your stop loss handle the many times a level fails.
Related reading
FAQs
- Why would Fibonacci levels work at all?
- There is no proof that markets follow these ratios. Levels may matter partly because many traders watch the same ones, and partly because pullbacks of roughly a third to two thirds of a move are common anyway. Treat them as reference zones, not rules.
- Is 50% a Fibonacci ratio?
- Not strictly. It does not come from the Fibonacci sequence, but it is included on almost every Fibonacci tool because traders widely watch halfway pullbacks.
- Should I measure from candle wicks or candle bodies?
- Most traders use the wicks, the true high and low of the swing, but either works if you stay consistent. Mixing the two between charts makes your levels hard to compare.
- Which Fibonacci level is the best place to enter?
- None is reliably better. Many traders watch the zone between 38.2% and 61.8% and look for a level there that lines up with support, resistance or structure, then wait for price to react before entering.
- Does Traders Portal have a Fibonacci tool on its chart?
- The trade chart does not include drawing tools. You can work the levels out from the swing high and low with the formulas in this lesson, or use a separate charting tool, and then place orders on the platform.