Fibonacci Extensions and Projections
Extensions project where a resumed trend might travel. They are useful for setting a target before entry, and unreliable as a promise of arrival.
Fibonacci extensions project how far a move might travel once a trend resumes, using ratios beyond 100% such as 127.2%, 161.8% and 261.8%. They are measured from three points: the start of the impulse, its end, and the end of the retracement. Because the projected levels sit in territory price has not traded, they are planning references rather than destinations, and price routinely overshoots or falls short of them.
What to remember
- Extensions need three anchor points, not two. Move the retracement point by 20 pips and every projected target moves with it.
- The real value is setting a target before entry, which turns the exit into the execution of a plan instead of a decision made with money on the line.
- A projection sits in untraded space. When an extension lands near a prior swing high, take the swing high, because that price has actually been tested.
- Never size a position from the target. The projection is the least certain number in the plan and the stop is the only one you control.
Lesson 13 of 26 in Technical analysis
Extensions project forward instead of measuring backward
A Fibonacci retracement measures how much of a completed move has been given back. A Fibonacci extension does the opposite job: it projects how far the next leg might travel once the trend resumes. Same number sequence, opposite direction, different purpose. Retracements answer "where might the pullback end". Extensions answer "if it resumes, where might it run to".
The common extension ratios are 127.2%, 161.8% and 261.8%. Unlike retracements, these levels sit beyond the previous extreme, in territory the market has not traded yet, which is both the appeal and the reason they must be treated as estimates rather than destinations.
The three-point measurement
An extension needs three points, not two. Point A is the start of the impulse. Point B is its end. Point C is the end of the retracement. The projection is then measured from C, using the length of the A to B leg.
Work through it with numbers. EUR/USD rallies from 1.0700 (A) to 1.0900 (B), a 200 pip leg, then retraces to 1.0820 (C). The 100% extension projects the same 200 pips from C, giving 1.1020. The 161.8% extension projects 323.6 pips from C, giving 1.1144. The 127.2% sits at 1.1074.
Two things follow from that arithmetic. First, the projected targets depend heavily on where C is: a shallower retracement to 1.0860 would move every target 40 pips higher. Second, the gap between 127.2% and 161.8% is 70 pips on this example, which is a substantial difference in a take-profit decision. The Fibonacci calculator handles the maths, but choosing the three anchor points is still a judgement you are making.
What extensions are genuinely good for
- Sanity-checking a target. If your plan wants 400 pips from a setup whose 161.8% extension sits 180 pips away, the target is not coming from the chart, it is coming from your hopes.
- Planning partial exits. Taking something off at the 127.2% and leaving a runner toward the 161.8% is a common structure, and it converts an unknowable question into two smaller decisions.
- Cross-checking other projections. When a 161.8% extension lands near a prior swing high or a measured-move objective, the area has more than one reason to matter.
- Judging risk and reward before entry. An extension gives you a numeric target, which lets you compare it against your stop distance and reject trades where the arithmetic does not work.
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Fibonacci Extensions and Projections: questions
What is the difference between Fibonacci retracements and extensions?
How do you calculate a 161.8% Fibonacci extension?
Is the 161.8% extension a reliable target?
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