🌀 Fibonacci Retracement

Finds the recent swing high and low on a Binance chart, draws the 23.6-78.6% retracements and 127.2/161.8% extensions, and shows which zone price sits in.

Loading Data: Binance public API

Swing range

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Where price sits

Price–

Retraced–

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Level	Price	Distance

Calculate by hand

Works for any asset

Swing high Swing low

Level	Price

For information only, not investment advice. Data comes from exchanges' public APIs and may be delayed or interrupted. Charts: TradingView Lightweight Charts™

How it is calculated

Within the chosen range (default: the last 120 bars, excluding the one still forming) the highest high and lowest low define the swing. If the low came first it is an up-swing; if the high came first, a down-swing. Up-swing retracement price = high − (high − low) × ratio; down-swing = low + (high − low) × ratio. Ratios are 0, 23.6, 38.2, 50, 61.8, 78.6 and 100%. Extensions project 127.2, 161.8 and 261.8% of the swing from its starting point.

Pick a coin and a timeframe: 15m or 1H for short-term trading, 4H or daily for the broader trend.

Adjust the swing range until the H and L markers on the chart match the high and low you have in mind.

Read the panel on the right: which two levels price sits between and how far the nearest ones are.

If you already know the high and low, type them into the calculator below to get the levels directly.

Things to know

50% and 61.8% are drawn thicker because pullbacks most often stall there. That is a tendency, not a guarantee.

Levels matter more when they line up with other evidence: moving averages, heavy volume zones or previous highs and lows.

A retracement well beyond 78.6% is widely read as the swing having failed.

Share the address bar link to open the same coin, timeframe and range.

Frequently asked questions

How are the swing high and low chosen?

The highest high and lowest low within the selected range. The last, still-forming bar is excluded because its values keep changing. A different range may pick a different swing, so check the H and L markers.

My TradingView drawing gives different numbers.

Almost always because the swing points differ. On TradingView you click two points by hand; here the range's extremes are used automatically. Enter the same two prices in the calculator below and the levels will match.

What are the 127.2% and 161.8% extensions?

Targets for a continuation in the same direction after the swing. Here they are the prices 1.272 and 1.618 times the swing size away from the swing's starting point.

How often does it update?

Every 15 seconds the latest bars are fetched again and the levels recalculated. It pauses when the tab is hidden and refreshes as soon as you return.

How is the KRW price calculated?

It is the USDT price multiplied by Bithumb's USDT/KRW rate, a reference only. It can differ from Korean exchange prices, which include the kimchi premium.

For information only, not investment advice. Data comes from exchanges' public APIs and may be delayed or interrupted.