Opening an F03 File

The F03 file type is primarily associated with HEC-RAS.

F03	File extension: F03
	File type:	Flow File

What is an F03 file?

F03 files mostly belong to HEC-RAS by U.S. Army Corps of Engineers. Hydrologic Engineering Centers River Analysis System (HEC- RAS) is a one-dimensional steady flow hydraulic model designed to aid hydraulic engineers in channel flow analysis and floodplain determination. The results of the model can be applied in floodplain management and flood insurance studies. These files can have extensions from F01 through F99.

How to open F03 files

You need a suitable software like HEC-RAS to open an F03 file. You need a suitable software like HEC-RAS from U.S. Army Corps of Engineers to open an F03 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 F03 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a F03 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online F03 Text Viewer

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Can't Open Your .F03 File? Try These Steps

F03 files can come from different programs and aren't universally openable.

Identify the Source: If received from a hydrologist, it's likely a HEC-RAS Flow File. If from a programmer, it may be Fortran 2003 source code.
Check the Header: Open the file in a text editor to inspect the first lines:
- Readable code indicates a Fortran script.
- Structured text with river data suggests HEC-RAS.
- Unreadable symbols mean it's a binary file.
Use the Original Software: The original program is usually required. Try the U.S. Army Corps of Engineers' HEC-RAS or a Fortran compiler. If uncertain, ask the sender.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for F03 File Extension

Identifier:

Hex: 46 6C 6F 77 20 54 69 74 6C 65 3D, ASCII: Flow.Title= (provided by TrID database)

Related files:

f02, f01, f04

Mime type:

text/x-fortran

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: FormulaTrix 2003
EXEFile: %ProgramFiles%\Taxprep\FMW-2003\fmw.exe %1

ProgramID: EMBIRD.File.f03
EXEFile: %ProgramFiles%\EMBIRD32\EMBIRD.EXE

an f03 Flow File is a special file format by U.S. Army Corps of Engineers and should only be edited and saved with the appropriate software.

How to solve problems with F03 files

Associate the F03 file extension with the correct application.
Update your software that should actually open flow files. Because only the current version supports the latest F03 file format. Search, therefore, e.g. on the U.S. Army Corps of Engineers manufacturer website after an available HEC-RAS update.
To make sure that your F03 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .F03 file online - secure, fast, and no downloads needed.