Convert KOZ files online for free
The converter easily converts your KOZ file to various formats - free and online. No Media Player or extra software needed.
The converter also works in reverse, so you can convert other Audio formats to KOZ with high quality output.
The .KOZ file format is a legacy, proprietary audio container primarily associated with the Sprint Music Store service used on feature phones in the mid-2000s (e.g., Sanyo, Samsung, and LG flip phones). These files were developed by Groove Mobile (formerly Chaoticom) and often utilize a proprietary CET compression algorithm or wrap standard streams like WMA or AAC in a digital rights management (DRM) shell.
Because they were designed to lock content to a specific handset or subscriber ID, .KOZ files are typically unplayable on modern media players like VLC Media Player or iTunes. Users usually encounter these files when recovering data from old microSD cards or phone backups, discovering that their purchased music library is inaccessible. While simple renaming to MP3 rarely works due to the file headers and encryption, the most reliable preservation method is converting them to MP3 or WAV to strip the obsolete container dependencies.
Use Convert.Guru to open and convert your KOZ file.
Users also converted BOX, APPX and APE files.
If you want to convert KOZ file to MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC, APE or WV, you can use Sprint Music Store or similar software from the "Mobile Music Download" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to KOZ, try Sprint Music Store or another comparable tool in the "Mobile Music Download" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our KOZ converter.