MP3 to WAV Converter
Convert MP3 audio to WAV format.
Drop your MP3 file here
or click to browse · max 500 MB
FFmpeg WASM (~25MB) will be downloaded on first use and cached by your browser.
MP3 to WAV Converter
Converts compressed MP3 audio to uncompressed WAV format (PCM 16-bit, 44.1kHz). WAV files preserve audio without any compression artifacts, making them the standard format for professional audio editing, music production, and CD mastering.
What is it used for?
- Audio editing in DAWs (Ableton, Logic Pro, FL Studio, Audacity)
- CD burning and mastering (Red Book CD standard requires PCM audio)
- Professional audio workflows where uncompressed audio is required
- Sample libraries and sound design
- Audio analysis and processing pipelines
Step-by-Step Guide
- Upload your MP3 file
- Click 'Convert to .WAV'
- FFmpeg decodes the compressed audio to uncompressed PCM
- Preview the WAV audio
- Download the uncompressed WAV file
How it works
Upload an MP3 file. FFmpeg decodes the MP3 and outputs as 16-bit PCM WAV. Note: converting from MP3 to WAV won't restore quality lost during MP3 encoding, but removes the compression layer for editing.
MP3 vs WAV
| Feature | MP3 | WAV |
|---|---|---|
| Compression | Lossy (~10:1) | None (uncompressed) |
| File Size | Small (1MB/min) | Large (10MB/min) |
| Editing | Re-encodes on save | No quality loss on save |
| Quality | Good (perceptual coding) | Perfect (PCM samples) |
| CD Compatible | No | Yes (Red Book) |
Tips & Best Practices
- Use WAV for editing, then export back to MP3 for distribution
- WAV files are 10x larger than MP3 - ensure you have enough storage
- Most DAWs prefer WAV input for the best editing experience
Frequently Asked Questions
Will converting to WAV improve audio quality?
No. Converting from a lossy format (MP3) to lossless (WAV) cannot restore lost data. However, the WAV file is better for editing because further processing won't add compression artifacts.
Why is the WAV file so much larger?
WAV files are uncompressed. A 5MB MP3 might become 50MB as WAV. This is normal - WAV stores every audio sample without compression.
What sample rate and bit depth is used?
The output uses 16-bit PCM at the original file's sample rate (typically 44.1kHz for most MP3 files).
Privacy & Security
This tool uses FFmpeg compiled to WebAssembly (WASM). The WASM binary (~25MB) is downloaded from a CDN on first use and cached by your browser. All file processing happens locally on your device - your files are never uploaded to any server. This makes it safe for sensitive, private, or confidential media files. Large files may take longer to process depending on your device's CPU and available memory.