Fibonacci Retracement & Extension Calculator
Fibonacci retracement, extension and projection levels from your own swing points.
Try before you buy.
- Free preview: the 50% retracement level in full, with the first rows of each table (up to 3) and a watermarked chart; every other figure is hidden.
- Locked until you unlock it: download and copy.
- Unlock: Pro pass, ₹179 for 30 days, a one-time payment that never renews.
Ways to unlock shows how to get the full result.
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These are the levels these ratios give for your two prices. They say nothing about where the price will go.
Retracements
Extensions
Projections from C
The ladder
How this was calculated
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For education only, not investment advice: no tool here tells you what to buy, sell or hold. Results use only the figures you enter, the files you load (read in your browser, never uploaded) and the published rules each page names. Check them against your broker's or exchange's own figures, and consider a licensed or registered adviser for advice on your situation.
About the Fibonacci Retracement & Extension Calculator
Type the two ends of a move — the swing low and high of a move up, or the high and low of a move down — and get the Fibonacci retracement levels between them, the extensions beyond them and, from a third point C, the projections. The usual ratios are filled in (23.6%, 38.2%, 50%, 61.8% and 78.6%; 127.2%, 161.8%, 200% and 261.8%), and every one can be changed or added to.
Levels are rounded to your tick size, or shown to the decimals you choose, so they read the way your instrument is quoted — a share to the cent, a currency pair to five decimals, a future to its tick. A ladder chart puts every level beside your swing.
These are the levels the ratios give for your two prices. They say nothing about where the price will go.
How to use it
- Choose the direction of the move: up (from a low A to a high B) or down (from a high A to a low B).
- Type the prices at A and B, and a point C if you want projections from it.
- Keep the usual ratios or type your own, and set the tick size or the decimals.
- Read the levels in the tables and on the ladder; copy them as text or download them as a CSV — with a pass, or after unlocking this result.
Examples
A 100, B 200
23.6% 176.40 · 38.2% 161.80 · 50% 150.00 · 61.8% 138.20 · 78.6% 121.40
A 100, B 200
127.2% 227.20 · 161.8% 261.80 · 200% 300.00 · 261.8% 361.80
A 100, B 200, C 150
61.8% 211.80 · 100% 250.00 · 161.8% 311.80
A 200, B 100 (a move down)
38.2% retracement 138.20 · 127.2% extension 72.80
Common uses
- Mark the retracement levels of a move you are watching, rounded to your instrument’s tick.
- Work out extension levels to compare with the targets in your own trade plan.
- Project a move’s length from the end of its pullback (an ABC projection).
- Check the levels a charting tool drew against the formula.
The formulas
With the move B − A (negative for a move down, so one set of formulas covers both):
- Retracement = B − r × (B − A): back from B towards A.
- Extension = A + e × (B − A): beyond B, measured from A.
- Projection = C + p × (B − A): the length of the move again, from C.
The ratios come from the Fibonacci sequence 1, 1, 2, 3, 5, 8, 13, 21 …: a number divided by the next tends to 0.618, by the one two places on to 0.382 (0.618²) and by the one three places on to 0.236 (0.618³); 78.6% is √0.618, 127.2% is √1.618, 161.8% the golden ratio and 261.8% its square. 50% is not a Fibonacci ratio: it comes from Dow Theory’s idea of a move retracing half (StockCharts ChartSchool: Fibonacci retracements).
Reading the results
- 0% and 100% of a retracement are B and A themselves; extensions start beyond 100%.
- Rounding: each level is rounded to the nearest tick for display; the CSV keeps the exact value next to the rounded one.
- A level below zero (a long extension of a move down) is shown and flagged: most prices cannot go there.
What it leaves out
Which swing to measure is your choice; the tool takes the prices you type. Different platforms anchor their tools at wicks or closes, so their levels differ when the inputs do.
Limitations
- One swing at a time; up to 20 ratios of each kind.
- The tool does not pick swings or read prices: you type them.
- Levels are arithmetic on your two prices and carry no view of the market.
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
What do I get without a pass?
Without a pass, Fibonacci Retracement & Extension Calculator shows the 50% retracement level in full, with the first rows of each table (up to 3) and a watermarked chart; every other figure is hidden. Until you unlock it, the result can’t be downloaded or copied. A Pro, Premium or Ultimate pass, a one-time payment that never renews, unlocks the full result. The pricing page lists the passes and their prices.
How is a Fibonacci retracement worked out?
For a move up from A to B, a retracement level is B − ratio × (B − A). From A 100 to B 200, the 61.8% retracement is 200 − 0.618 × 100 = 138.20, and the 50% level is 150.00.
What is the difference between an extension and a projection?
An extension measures from A: A + ratio × (B − A), beyond B. A projection measures from a third point C, usually the end of the pullback after B: C + ratio × (B − A).
Can I use my own ratios?
Yes. Each list takes any ratios in percent — 88.6 or 70.7, for example — separated by commas, or by semicolons where you write decimals with a comma (88,6; 70,7), and the tables and the ladder follow.
How do I round levels to my instrument’s tick?
Type its tick size, for example 0.05 for a share quoted in steps of 5 cents or 0.25 for an index future. Each level is rounded to the nearest tick; leave it empty to show the decimals you choose instead.
Do the levels say where the price will turn?
No. They are the prices these ratios give for your two points, nothing more. Whether a level matters is for you to judge.