WAV to BRSTM Converter
Convert WAV audio files to BRSTM format for Nintendo Wii. Lossless audio input for best quality BRSTM output. Free, browser-based tool.
Convert WAV to BRSTM — Lossless Quality for Wii Custom Music
WAV files provide lossless audio quality, making them the ideal input format for BRSTM conversion. Convert your WAV files to BRSTM with zero quality loss and precise loop control.
Using WAV as your source format ensures the highest possible audio quality in your BRSTM files. Since WAV is uncompressed, our WebAssembly converter can produce a bit-perfect BRSTM output. This is especially important for games where audio quality matters — like rhythm games or cutscenes.
Why Convert?
- Achieve the highest quality BRSTM output using lossless WAV source files
- Perfect for rhythm games where audio timing precision matters
- Maintain full audio fidelity through the entire conversion pipeline
- Edit audio in professional tools (Audacity, FL Studio) then convert to BRSTM
- Ideal for orchestral or high-dynamic-range game music replacement
Supported Platforms
- Nintendo Wii (USB Loader GX, Riivolution)
- Dolphin Emulator
- Wii U (vWii mode)
- CTGP Revolution
- Project M / Project+
How to Convert — 3 Easy Steps
Upload Your WAV File
Drag your WAV file onto the upload area. Both standard WAV and WAVE formats are supported.
Configure Settings
Choose your channel count (1-8), enable looping, and set precise loop points for seamless in-game playback.
Convert & Download
Click Convert and download your BRSTM file instantly. The entire process runs in your browser.
BGM Box vs Traditional Tools
| Feature | BGM Box | Traditional Tools |
|---|---|---|
| Sign-up Required | No — use instantly | Often required |
| Installation | None — works in browser | Must download & install |
| Loop Point Editing | Visual waveform slider | Manual hex editing |
| Multi-format Support | BRSTM, BCSTM, BFSTM | Usually single format |
| Cost | 100% Free | Free but complex setup |
| Platform | Any device with a browser | Windows-only tools |
Supported Games
These games and emulators support custom BRSTM/BCSTM/BFSTM audio files:
Frequently Asked Questions
BRSTM is an audio file format used by Nintendo Wii games. It stores compressed or uncompressed audio with optional loop points, allowing game music to seamlessly loop during gameplay. It was developed by Nintendo as the standard audio container for Wii game discs.
Loop points define a range in the audio that repeats seamlessly. When playback reaches the loop end sample, it immediately jumps back to the loop start sample. This allows game music to play continuously without gaps or restarts. BGM Box provides a visual waveform slider for precise loop point editing.
Yes! Dolphin Emulator supports BRSTM files natively. Simply place your converted BRSTM files in the appropriate game directory (usually under User/Load/ or the game-specific folder), and Dolphin will use them as custom background music during gameplay.
There is no hard limit, but very large files (>50MB) may take longer to process since everything runs in your browser. For best performance, we recommend files under 50MB.
No! All audio processing runs locally in your browser using WebAssembly technology. Your files never leave your computer. We value your privacy and security.
BRSTM is for Nintendo Wii, BCSTM for Nintendo 3DS, and BFSTM for Wii U and Nintendo Switch. They share the same basic audio structure but differ in codec support and header format. BFSTM is the newest format and supports higher quality audio codecs.