Fibonacci Calculator
Key takeaways
- This measures a ₹1,000.00 swing up from ₹21,500.00 to ₹22,500.00 — every level below is a fixed fraction or multiple of that range.
- The 61.8% "golden ratio" level sits at ₹21,882.00, ₹618.00 below the swing high.
- The 127.2% extension projects ₹272.00 beyond the swing high, to ₹22,772.00.
- Measured as a downtrend retracement instead, the 61.8% level would sit at ₹22,118.00.
Retracement and extension levels
Uptrend: retracements are measured down from the swing high, and the two extensions project above it. The dashed lines are the swing high and swing low entered above; every rung is a fixed fraction or multiple of the distance between them. Where price actually goes is not something these levels, or this page, can tell you.
About the Fibonacci Calculator
The Fibonacci Calculator computes the standard retracement and extension price levels between a swing high and a swing low — 23.6%, 38.2%, 50%, 61.8% and 78.6% for retracements, 127.2% and 161.8% for extensions. They are fixed fractions and multiples of the distance between the two prices you enter, and that is all they are. This page computes the levels; it does not predict whether price will react at any of them.
Enter the swing high and the swing low — the two extremes of the move being measured — and choose the direction. An uptrend retracement measures a rally from the low to the high, marking where a pullback DOWN would sit; a downtrend retracement measures a fall from the high to the low, marking where a bounce UP would sit. That choice flips which end the levels are measured from, so it changes every number on the page.
For an uptrend, retracements are measured downward from the swing high toward the swing low — a bigger ratio is a deeper pullback — and the two extensions project upward beyond the swing high. For a downtrend both are mirrored: retracements are measured upward from the swing low, and extensions project downward beyond it. The Key takeaways card shows what the 61.8% level would be if the direction were flipped, so the effect of that setting is visible rather than assumed.
50% is not, strictly, a Fibonacci ratio — it does not come from the sequence — but it is included because almost every charting platform shows it alongside the real ones. 61.8% is the ratio associated with the golden ratio and is the one most commonly discussed. Nothing here divides, so there is no undefined case: entering the same price for both the swing high and the swing low gives a range of zero and collapses all seven levels onto that price, which is degenerate but correct.
Frequently asked questions
How are Fibonacci retracement levels calculated?
Range = Swing high − Swing low. For an uptrend, level = High − Range × ratio, for ratio 0.236, 0.382, 0.5, 0.618 and 0.786. For a downtrend it is mirrored: level = Low + Range × ratio. The extensions use (ratio − 1), so 127.2% adds 0.272 of the range and 161.8% adds 0.618 of it, beyond the swing high in an uptrend and beyond the swing low in a downtrend.
Which direction should I choose?
It depends on the move you are measuring, not on a preference. If price rallied from the low to the high and you are marking where a pullback would fall, that is the uptrend setting. If price fell from the high to the low and you are marking where a bounce would reach, that is the downtrend setting. The two produce different numbers from the same pair of prices.
Do prices actually respect Fibonacci levels?
This calculator cannot tell you, and does not claim to. The levels are fixed fractions of a distance between two prices you supplied. Many traders watch them, which is itself sometimes offered as an explanation for reactions at them; whether price does anything at a given level is outside what the arithmetic can say.
Why is 50% included when it is not a Fibonacci number?
Because it is watched alongside the genuine ratios on essentially every charting platform, and leaving it out would make this set differ from the one most readers see elsewhere. Its inclusion is convention, not mathematics — the honest description is that it is the midpoint of the range.
What is the difference between a retracement and an extension?
A retracement level sits inside the swing, between the high and the low. An extension sits beyond it: past the swing high in an uptrend, past the swing low in a downtrend. Retracements use ratios below 1 and extensions ratios above 1, which is why the extension formula uses (ratio − 1).
What does the ladder chart show?
All seven levels positioned by price, so the spacing between the rungs is the real spacing between the numbers — the retracements cluster and the extensions sit further out. The two dashed lines are the swing high and swing low you entered. Every rung is labelled with its ratio and its price.
Disclaimer: This calculator is for information and education only. It is not investment advice and not a recommendation or a tip, and it does not predict prices. Trading in shares and derivatives carries a risk of loss: futures and sold options are leveraged, and a loss on them can exceed the margin paid. Brokerage differs by broker, and brokerage, taxes and exchange charges change over time. The levels are arithmetic on past prices, not forecasts or trading signals. Every figure is computed solely by applying the formula and assumptions stated on this page to the inputs you entered.