Fourier Extrapolator MT4 Indicator: Price Predictor for Scalping

Fourier Extrapolator MT4 indicator

The Forex market is an arena of constant change, where traders seek various methods and tools to predict price movements effectively. Among the plethora of indicators available, the Fourier Extrapolator MT4 Indicator stands out for its unique forecasting capability. Leveraging the principles of Fourier theory, this specialized indicator offers insights into possible future price movements, making it invaluable for intraday trading strategies. In this article, we will delve into the mechanics, applications, limitations, and best practices for using the Fourier Extrapolator in Forex trading.

Understanding the Fourier Extrapolator

The Fourier Extrapolator falls under the category of predictor indicators and functions by projecting a line of possible future price actions on the chart of a given currency pair. This forecast is rooted in Fourier theory, a branch of mathematics focused on breaking down complex signals into their constituent sinusoids.

Scope and Timeframe

The indicator typically provides a forecast within a one-day time frame, making it exclusive to intraday trading. In terms of accuracy, the Fourier Extrapolator performs best on shorter time frames — particularly the M1 and M5 charts. This trait allows the indicator to serve as an effective auxiliary tool for scalping strategies.

Practical Applications

Intraday Trading

The indicator’s one-day scope aligns perfectly with intraday trading, where positions are generally opened and closed within a single trading day. Traders can use the Fourier Extrapolator to gauge the probable direction and magnitude of price changes for a currency pair, allowing them to make more informed decisions about entry and exit points.


For traders engaged in scalping — a strategy that seeks to capitalize on small price gaps created by order flows — the Fourier Extrapolator can be a powerful aid. Given its high accuracy on the M1 and M5 time frames, it can help scalpers pinpoint optimal moments to enter or exit trades.

Limitations and Caveats

Economic Events

While the Fourier Extrapolator excels in forecasting based on historical data, its effectiveness diminishes significantly on days when major economic events are released. Since Fourier theory calculates future prices based on past prices, sudden market shifts triggered by significant economic events can throw its predictions off course.

Timeframe Sensitivity

The indicator’s forecasting accuracy diminishes as you move to higher time frames. Traders should bear this in mind when considering its use for strategies that span longer periods.

Best Practices

  1. Complementary Tools: Given its limitations, the Fourier Extrapolator is best used in conjunction with other MT4 indicators — like Moving Averages or RSI — for a more rounded analysis.
  2. Economic Calendar: Traders should be aware of the economic calendar and consider avoiding the use of this indicator on days when crucial economic data or events are scheduled.
  3. Back-Testing: Before integrating this tool into your trading strategy, it’s advisable to back-test it on historical data to get a feel for its forecasting capabilities.


The Fourier Extrapolator MT4 Indicator offers traders a unique tool for predicting short-term price movements in the Forex market. Its utility in intraday trading and scalping is especially noteworthy, provided one accounts for its limitations. Being aware of its sensitivity to economic events and longer time frames can help traders optimize its potential. By adhering to best practices and combining it with other analytical tools, Forex traders can make the Fourier Extrapolator a potent weapon in their trading arsenal.

Features of Fourier Extrapolator MT4 indicator

  • Platform: Metatrader 4
  • Ability to change settings: Yes
  • Timeframe: any from 1 Minute to Daily, M1 and M5 recommended.
  • Currency pairs: any

In file you will find:

  • Fourier_extrapolator.ex4

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