Opening NBT Files

The NBT file type is primarily associated with Minecraft.

NBT	File extension: NBT
	File type:	world data

What is an NBT file?

NBT files mostly belong to Minecraft by Mojang. An NBT file contains information about terrains, house models, objects, blocks, character models, and worlds used by Minecraft video game. This file is saved in Named Binary Tag format and compressed using ZIP or GZip compression format. Minecraft decompresses NBT files to expose data stored in it as raw JSON data which can be used in the game. The Java edition of Minecraft features built-in utilities for creating, editing, and converting NBT files to and from Anvil and MCRegion format.

How to open NBT files

You need a suitable software like Minecraft to open an NBT file. You need a suitable software like Minecraft from Mojang to open an NBT file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your NBT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a NBT file directly in the browser:. Just drag the file onto this browser window and drop it.

Online NBT Text Viewer

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or drag and drop it here

Online File Viewer

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.NBT File Not Opening? How to Fix It:

Because .NBT files can originate from different programs, they aren't universally openable.

Identify the Source: If received from a gamer, it's likely Minecraft game world data. If from an older mobile backup, it may be Nokia data.
Check the Header: Open the file in a hex viewer to inspect the first bytes:
- 1F 8B: Indicates GZIP compression, standard for Minecraft NBT files.
- 0A: Suggests an uncompressed Named Binary Tag file.
- Readable text: Suggests a misnamed JSON or text file.
Use the Original Software: You usually need the original program. Try NBTExplorer, MCEdit, or Minecraft by Mojang; if uncertain, ask the sender.
Use this Webpage: Drag and drop your .NBT file into our viewer to detect the format, extract readable metadata, and preview it.

Technical Data for NBT File Extension

File classification:

Game

Mime type:

application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: NBBACKUPTEMPLATEType
EXEFile: %ProgramFiles%\Nero\NERO7~1\NEROBA~1\BackItUp.exe %1

ProgramID: NBBACKUPTEMPLATEType
EXEFile: %ProgramFiles%\Ahead\Nero BackItUp\BackItUp.exe %1

ProgramID: NBBACKUPTEMPLATEType
EXEFile: %ProgramFiles%\Nero\NERO7~1\NEROBA~2\BackItUp.exe

ProgramID: NeroBackItUp.Files7.nbt
EXEFile: %ProgramFiles%\Nero\Nero8\Nero BackItUp\BackItUp.exe

ProgramID: NeroBackItUp.Files8.nbt
EXEFile: %ProgramFiles%\Nero\Nero8\Nero BackItUp\BackItUp.exe

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an nbt world data is a special file format by Mojang and should only be edited and saved with the appropriate software.

How to solve problems with NBT files

Associate the NBT file extension with the correct application.
Update your software that should actually open world data files. Because only the current version supports the latest NBT file format. Search, therefore, e.g. on the Mojang manufacturer website after an available Minecraft update.
To make sure that your NBT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .NBT file online - secure, fast, and no downloads needed.