since 2000
Opening an FFT File
The FFT file type is primarily associated with LTspice.
What is an FFT file
FFT files mostly belong to LTspice. FFT files are simulation data files used by LTspice. They hold the results of a Fast Fourier Transform analysis run on circuit signals.
This file records how a time-domain signal is transformed into its frequency components, showing both amplitude and phase.
Key points compiled by FilExt.com include:Purpose: Stores FFT results from circuit simulations. Usage: Viewed with LTspice to analyze frequency responses. Content: Contains numerical data representing the frequency-domain characteristics of a circuit. FilExt.com note: For additional details, check the LTspice simulator page.
This file records how a time-domain signal is transformed into its frequency components, showing both amplitude and phase.
Key points compiled by FilExt.com include:
How to open FFT files
You need a suitable software like LTspice to open an FFT file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FFT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FFT file directly in the browser:. Just drag the file onto this browser window and drop it.
Online FFT Text Viewer
or drag and drop it here
Read our privacy guarantee in Filext’s terms and privacy policy
Please allow ads on our site
This helps us keep our servers running. Then re-upload your file to view it.Click here to see how to disable the ad blocker for filext.com
Programs that open and convert FFT files:
- LTspice
See the previous paragraphs to learn more about the main application. FFT files are often referred to as LTspice data files because this type of file is primarily created or used by this software.
- DCA/FFT Final Form Text
- DisplayWrite Document
- Fast Find by Microsoft CorporationThe Find Fast Indexer is a utility that builds indexes to speed finding documents from the Open dialog box in Microsoft Office programs and from Microsoft Outlook. Related links: Microsoft Fast Find Overview
- Fast Fourier Transform Analysis Data
FFT format details:
The file format determines how the data is stored in the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Below you will find our evaluation of the FFT files:
The FFT file extension is not common and includes very many different file formats. However, the following two file formats are common:
- 10% of all FFT files use the same file format, which can be identified by the letters "54 00 69 00 74 00 6C 00 65" at the beginning. They consist of unreadable binary data. The file size is in the range of 1 MB to 4 MB. The keywords Title, Date and Users are typical for these files. Files like these are sometimes connected to draft.
- 7% of all FFT files use the same file format, which can be identified by the letters "0.0 0.00" at the beginning. These files contain text and words, not binary data. The average file size is 160 KB with most files being between 160 KB and 160 KB in size. The files contain the following words: 0.29238880630709374, 0.5847776126141875 and 0.8771664189212812. Files like these have the following tags: resolution, freq and scan.
The remaining 83% of all FFT files are files with no common format. The category is noise. If you want to find out which format your FFT file belongs to, just click on the button "Choose your .fft file to analyze".
Technical Data for FFT File Extension
File classification:
Data
Mime type:
The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.
ProgramID: FFTFile, FileType: Find Fast Index
ProgramID: Adobe Audition FFT
EXEFile: %ProgramFiles%\Adobe\Audition 1.5\Audition.exe
EXEFile: %ProgramFiles%\Adobe\Audition 1.5\Audition.exe
ProgramID: AUD20.Adobe Audition FFT
EXEFile: %ProgramFiles%\Adobe\Adobe Audition 2.0\Audition.exe
EXEFile: %ProgramFiles%\Adobe\Adobe Audition 2.0\Audition.exe
ProgramID: Adobe Audition FFT
EXEFile: %ProgramFiles%\Adobe\Audition 1.0\Audition.exe
EXEFile: %ProgramFiles%\Adobe\Audition 1.0\Audition.exe
an fft simulation result file is a special file format and should only be edited and saved with the appropriate software.
How to solve problems with FFT files
- Associate the FFT file extension with the correct application.
- Update your software that should actually open simulation result files. Because only the current version supports the latest FFT file format. Search, therefore, e.g. on the manufacturer website after an available LTspice update.
- To make sure that your FFT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .FFT file online - secure, fast, and no downloads needed.