NDD Converter

Extract text from NDD files

Select File
Drop or upload your .NDD file

Online File Converter

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How to extract text from your NDD file

Click the "Select File" button above, and choose your NDD file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert NDD to another file type

To convert your NDD file to another format, you need NDrive or other GIS software.

Convert a file to NDD

To convert other file formats to the "GPS Log File" file type, you need software like NDrive or a similar tool.

About NDD files

The .ndd extension represents two very different types of legacy data, creating significant confusion for users.

1. NDrive Navigation Data Log (Most Common)
Most frequently (56%), this file is a navigation log generated by NDrive, a GPS software used on older smartphones and dedicated navigation units. These files contain route history, favorites, or map data locked in a proprietary format.

The Problem: You cannot open these directly in Google Maps or Google Earth. They are often binary or obscure text files that are unreadable by standard text editors.
The Solution: To view your travel history, these files must be converted into GPX (GPS Exchange Format) or KML (Keyhole Markup Language). Once converted, you can import them into modern mapping tools.

2. Nintendo 64DD Disk Image
For gamers, an .ndd file is a ROM dump from the Nintendo 64DD (Disk Drive), a failed peripheral for the N64 console.

The Problem: These are magnetic disk dumps, not standard cartridges. Standard N64 emulators often fail to load them without specific BIOS files or plugins.
The Solution: You need specialized emulation software like Project64 or MAME to run these files. In some cases, converting the disk image to a standard N64 or Z64 format isn't possible due to the unique hardware architecture, so running them directly in a compatible emulator is the only option.

3. NeuroLucida Data
Rarely, this may be a scientific data file from MBF Bioscience software, used for neuron reconstruction. These highly specialized files require the original software to view or export to XML.

Convert.Guru analyzes your NDD file, detects the exact format, and lets you read the text inside.

Users also converted INDD, NWB, NLV and NIA files.

FAQ

If you want to convert NDD file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use NDrive or similar software from the "Navigation Data Storage" category. In the File menu, look for Save As… or Export….

To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to NDD, try NDrive or another comparable tool in the "Navigation Data Storage" category.

The NDD Converter Story

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 NDD converter.