DATA File

What are DATA files and how to open them

Are you having problems opening a DATA file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your DATA files.

What is a DATA file?

DATA files have multiple uses, and Data is one of them. Read more about the other uses further down the page.

Data File

The .data file extension is given to the data files that have been created by and used for a variety of different software applications. The majority of DATA files are saved in a binary file format that cannot be opened in a standard text editor.

DATA files can contain various file types, including document files, project files, libraries, and other file types.

Use the File.org File Analyzer if you are unsure what type of data file you are trying to open. You can also try inspecting the file in a HEX-editor to see if something reveals what type of file it is. You'll find a few hex-editors listed below.

How to open DATA files

We have identified two DATA openers that are compatible with this specific type of DATA file.

Programs that open Data files

Last updated: October 22, 2026

All known file formats using extension .DATA

While Data File is a popular type of DATA-file, we know of 7 different uses of the .DATA file extension. Different software may use files with the same extension for different types of data.

3D_Core ObjDef Format

We know that one DATA format is 3D_Core ObjDef Format. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

While we have not verified the apps ourselves yet, our users have suggested nine different DATA openers which you will find listed below.

Genesis the Third Day Fractal Data

These files contain fractal landscapes generated with Genesis the Third Day, a fractal landscape generator for the Commodore Amiga home computer.

IdeaMaker Print Preview Data

IdeaMaker Print Preview Data files store extra slicing results generated by the slicing software used for certain Raise3D 3D printers. They are created by ideaMaker during slicing and contain a thumbnail image of the model plus the settings used for slicing. These files help the printer's touchscreen show the preview of a print job, including its progress and appearance, but they are not required for the printer to execute the print. The printer needs the accompanying G-Code file to perform the actual print.

When a model is sliced in ideaMaker, both a G-Code file and this print preview data file are exported. The preview data file allows the software or the printer interface to display details such as estimated print time, filament usage, material cost, and a visual slice preview that can be reviewed layer by layer. It can also be imported back into ideaMaker to reuse successful print settings or to create new slicing templates.

Files of this type begin with the ASCII signature IDEA-PRINTDATAIY at the very start of the file (offset zero).

Java Runtime Currency Data

Java Runtime Currency Data files store compiled currency information used by the Java runtime. They are created by the Java platform (part of the standard JDK/JRE install), not by user-editable tools. Their purpose is to supply built-in data about currencies - like valid ISO 4217 currency codes, numeric codes, default number of decimal places (fraction digits), mappings from countries to currencies, and data for special cases where countries change currencies or have more than one currency.

Each file lives under the Java installation directory, typically in the lib folder, and is read at startup by the Java class java.util.Currency. It provides data for methods like Currency.getInstance(...) and supports locale-sensitive currency formatting. The runtime also supports a user override: if a system property named java.util.currency.data is defined pointing to a properties file (or a file named currency.properties in lib), then certain currency entries can be replaced or extended.

Data begins with a 32-bit magic number (hex 0x43757244, ASCII "CurD"), followed by format version and data version numbers. Then a large base table maps two-letter country codes to integer entries that encode default currency code, numeric code, and fraction digits. After that come special-case tables for countries changing currencies, and a list of "other currencies" (currencies used alongside the main currency or by non-simple countries) each with their own numeric code and fraction digits.

RHVoice Data File

RHVoice is a free and open-source speech synthesizer. It stores voice data in DATA files.

Siegfried Data File

File format used by applications published by Siegfried Soft for the Commodore Amiga home computer.

Various apps that use files with this extension

These apps are known to open certain types of DATA files. Remember, different programs may use DATA files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DATA file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.