Fibonacci Retracement Calculator
Enter the swing high and low of a move and choose its direction. Get the key Fibonacci retracement and extension price levels instantly.
Free tool · No sign-up · Updated July 2026
Retracement levels
Extension targets
Estimates for planning only — verify against your broker. Nothing here is financial advice.
How the fibonacci retracement calculator works
Fibonacci retracements mark where a pullback might find support or resistance before a trend resumes, and extensions project where a move might run to. Traders watch the 38.2%, 50% and 61.8% retracements especially. Enter your swing points and this tool prints every level as an actual price.
- Take the high and low of the swing you're measuring and choose whether the move was up or down.
- Retracement levels sit between the high and low: in an uptrend they measure down from the high, in a downtrend up from the low.
- Extension levels (127.2%, 161.8%, 261.8%) project beyond the move to estimate targets.
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Learn the fundamentals
Go beyond the numbers. These free TradeOlogy Academy lessons cover the theory behind this calculator.
Technical Analysis Foundations
Where Fibonacci sits in a complete technical toolkit — and what it can and can’t do.
Read the lesson ↗ Academy lessonPrice Action Fundamentals
Fib levels work best confirmed by price action — this lesson teaches how to read it.
Read the lesson ↗ Academy lessonChart Patterns
Combine retracement levels with the patterns they form inside for higher-conviction setups.
Read the lesson ↗Related calculators
Fibonacci Retracement Calculator — FAQ
Which Fibonacci levels matter most?
The 61.8% ("golden ratio"), 50% and 38.2% retracements get the most attention as potential support/resistance in a pullback. For targets, the 127.2% and 161.8% extensions are the most watched.
Is the 50% level a real Fibonacci number?
Strictly no — 50% isn't derived from the Fibonacci sequence — but traders include it because markets so often retrace about half of a move. It's a convention that has earned its place on the tool through observation.
Do Fibonacci levels actually work?
They're a reference, not magic. Levels work partly because so many traders watch them, creating self-fulfilling reactions. Treat them as zones of interest to combine with price action and your own edge — then journal whether they actually improve your results.