Extract text from NBU files
To convert your NBU file to another format, you need Nokia PC Suite or other Backup software.
To convert other file formats to the "Mobile Device Archive" file type, you need software like Nokia PC Suite or a similar tool.
A .nbu file is a legacy mobile backup archive created by the Nokia PC Suite, specifically using the Content Copier tool. These binary archives contain essential data from older Nokia handsets (Symbian, S40, S60), including contacts, SMS/MMS messages, calendar entries, call logs, and sometimes media files like photos.
The main difficulty with .nbu files is their obsolescence and proprietary nature. Because Nokia PC Suite is discontinued and does not run on modern operating systems like Windows 11 or macOS, users are often locked out of their old digital memories. Furthermore, modern smartphones (Android and iPhone) cannot natively read or import data directly from a .nbu container. To access this data, the file must be parsed and converted. For migrating contacts to modern devices, converting to VCF (vCard) is the standard solution. For archiving text messages and call logs, converting to CSV or TXT ensures the data is readable in spreadsheet software like Microsoft Excel or standard text editors. Media files embedded within the backup usually need to be extracted to their original formats (e.g., JPG, MP3) rather than converted.
Convert.Guru analyzes your NBU file, detects the exact format, and lets you read the text inside.
Users also converted NBF, TXT, CSV, HTML, VMG, JSON, SOR, MEMO, LBF and MIG files.
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 NBU converter.