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Fibonacci Retracement Level Calculator

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Fibonacci Retracement Level Calculator

The Fibonacci Retracement Level Calculator turns a single swing high and swing low into a complete table of Fibonacci retracement and extension price levels. Instead of eyeballing a chart or running the arithmetic by hand, you get the exact prices for every key ratio in an instant — ready to drop into your trading plan, alerts, or risk model. Everything runs in your browser, so your numbers never leave your device.

Cara Penggunaan

Masukkan swing high — the peak price of the move you are measuring.
Masukkan swing low — the trough price of the same move.
Pilih trend direction: uptrend (a pullback down from the high) or downtrend (a bounce up from the low).
Pick the number of price decimals to match your instrument — 2 for stocks and indices, 4 for forex, or 8 for crypto.
Read the retracement and extension tables, which update automatically as you type. The 61.8% golden-ratio level is highlighted for quick reference.

Fitur

Standard retracement levels – 0%, 23.6%, 38.2%, 50%, 61.8%, 78.6% and 100%.
Extension targets – 127.2%, 161.8%, 200% and 261.8% for projecting where the trend may continue.
Direction toggle – switch between uptrend and downtrend so levels are anchored correctly.
Significance colour-coding – the golden ratio, key levels and swing anchors are visually distinct.
Presisi yang dapat disesuaikan – display prices with 2 to 8 decimals for stocks, forex or crypto.
Instant and private – fully client-side math with no data sent to a server.

 Tanya Jawab Umum

Where do Fibonacci ratios like 61.8% come from?

They are derived from the Fibonacci sequence. Dividing a number by the one after it approaches 0.618 (the golden ratio), the number two places ahead gives roughly 0.382, and three places ahead gives about 0.236. Traders adopted these proportions because they recur throughout nature and tend to align with common market pullback depths.
Why is the 61.8% level considered the most significant?

61.8% is the inverse of the golden ratio (phi, about 1.618), the limit reached when dividing consecutive Fibonacci numbers. Price often reacts strongly around this proportion, so it is widely watched as a likely area for support, resistance or a reversal.
What is the difference between a retracement and an extension?

A retracement measures how far price pulls back within an existing move, between 0% and 100% of the swing. An extension projects beyond the 100% point, using levels such as 127.2% and 161.8%, to estimate where a trend might travel once the prior swing high or low is exceeded.
Is the 50% level actually a Fibonacci ratio?

No. 50% is not part of the Fibonacci sequence, but it is included by convention because markets frequently retrace about half of a prior move. The level traces back to Dow Theory and Gann analysis rather than to Fibonacci mathematics.