What is a BNK file?
A .BNK file is a data container used by multiple software applications. The most common use is the Wwise SoundBank format by Audiokinetic. Video game developers use this format to store audio effects, music, and voice lines. The .BNK file packages these audio assets for efficient loading during gameplay.
Other applications also use the .BNK extension. It can be an ExamView Question Bank used by the ExamView Assessment Suite for educational testing. It can also act as an asset archive for games like *Test Drive Unlimited* by Eden Games, or as a local file cache for Spotify. Historically, it was also used as an Adlib Instrument Bank for legacy Adlib sound hardware.
How to open BNK files?
Because a .BNK file has multiple possible meanings, you must know its origin to open it correctly. If you have a game audio file, you can use the Wwise software or command-line extraction tools like bnkextr to access the underlying .WAV or .OGG audio files. If it is an educational test, you need the ExamView software.
Instead of guessing the format, viewer.online/bnk can analyze .BNK files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Best practices and troubleshooting
If you want to extract audio from a game .BNK file, be aware that the internal audio is often compressed. Extracting the files may require converting them to standard formats. We recommend file conversion to sensible target formats on convert.guru to transform your extracted audio into standard .MP3 or .WAV files.
Software and tools
- Wwise by Audiokinetic - ExamView Assessment Suite - Spotify - bnkextr (Command-line extraction tool)
Summary
A .BNK file can be a game audio bank, a test question database, or a music cache. Because it has many uses, viewer.online/bnk is useful for identifying, inspecting, and understanding .BNK files without installing software or dealing with compatibility problems.