>> NII file

NII file format description

Many people share .nii files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .nii file can be edited, converted or printed with. On this page, we try to provide assistance for handling .nii files.

1 filename extension(s) found in our database.

.nii - NIfTI-1 Data Format File

The NII data files are related to niftilib. NII file is a NIfTI-1 Data Format File. NIfTI-1 is a new Analyze-style data format, proposed by the NIfTI DFWG as a short-term measure to facilitate inter-operation of functional MRI data analysis software packages.

Data files
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NIfTI-1 Data Format File related extensions:
Delft-FEWS Forecast Data
DECE ZIP Compressed Data
Iomega Backup Data
Iomega Automatic Backup Data
ArcSoft Print Creations Template

Naturally, other applications may also use the .nii file extension. Even harmful programs can create .nii files. Be especially cautious with .nii files coming from an unknown source!

Can't open a .nii file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .nii file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

bii, nji, ni, ini, gii, nki, nil, mii, ii

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Basilisk II Data
Norton Icon Library File
GIfTI Data
Nero BackItUp Job Information
IconWorkshop Extended Information
Native Instruments Kontakt Library

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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