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This free NIFTI to DICOM converter can help you convert NIfTI (Neuroimaging Informatics Technology Initiative) image to DICOM (Digital Imaging and Communications in Medicine) image. The tool will try to maintain the image quality of the source NIFTI file and create a high quality DICOM file as much as possible. The tool can convert NIfTI images (3D/4D) to DICOM series (2D), if the source file is 4D, it will be split into multiple files by frame, each split file will be converted into a single 2D DICOM file.

How To Use

  1. Select a NIFTI file (such as *.nii, *.nii.gz).
  2. Click the "Convert" button to start uploading your files.
  3. Once the upload is complete, the converter will redirect a web page to display the conversion results.


  • The maximum upload file size is 200 MB.
  • Before uploading, please make sure you agree to the terms of this website.
  • If the file upload process takes a long time or is unresponsive or very slow, please try to cancel and resubmit.
  • This converter cannot support encrypted or protected image files.
  • If the source file is a very large file, it will take more time to upload, be sure to select a valid file.

File Format Information

  • NIfTI (Neuroimaging Informatics Technology Initiative) is a medical image data format, include both NIfTI-1 and NIfTI-2 data format, it can store the medical image data and information in a single NII file. The file extensions can be .nii, .nii.gz.
  • DICOM (Digital Imaging and Communications in Medicine) is an image format for storing medical data, such as CT and MRI scan data, it also contains a lot of useful medical information, such as patient tag, study tag, series tag and image tag. The file extensions can be .dcm, .dicom.

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