MP3 to WAV Converter
MP3 to WAV Converter decode mp3 to pcm wav make wav from mp3 without upload mp3 to uncompressed audioProcessing stays on this device. Choose one media file up to 200 MB.
- File:
- Size:
- Duration:
Result
Create a standard PCM WAV file
Choose an MP3, select 22.05, 32, 44.1, or 48 kHz and stereo or mono, then press Convert to WAV. The uncompressed 16-bit PCM download keeps the source base name and adds -converted.wav.
Why convert compressed audio to WAV?
MP3 saves space by discarding audio information. WAV commonly stores decoded samples without further perceptual compression. Converting does not recover discarded detail, but it can provide a predictable input for editing software, game engines, transcription tools, or devices that require PCM audio.
Worked example: prepare a clip for editing
A music editor requests stereo 44.1 kHz WAV, but your source is an MP3. Keep the default sample rate and stereo setting. A three-minute output will be much larger than the MP3 because every sample is stored directly. That size increase is expected and does not mean extra quality was created.
Sample rate and channel choices
Use 44.1 kHz for common music workflows and 48 kHz when matching video production. Choose mono for a single-voice recording when stereo positioning is unnecessary. Changing sample rate resamples the decoded signal. It should match the receiving workflow rather than being selected merely because a larger number looks better.
Output size and local processing
Stereo 16-bit 44.1 kHz PCM uses about 10 MB per minute. Long sources can therefore produce large downloads and require substantial browser memory. The FFmpeg WebAssembly engine stays on your device, as does the chosen file. The page accepts inputs up to 200 MB, though available RAM may impose a lower practical limit.
Limitations and common mistakes
WAV is a container, not one universal codec. This page deliberately creates widely compatible PCM rather than compressed WAV variants. It uses the first audio stream and does not preserve MP3 tags, cover art, chapters, or encoder metadata. Never expect an MP3-to-WAV conversion to restore frequencies removed during the original MP3 encoding.
MP3 to WAV FAQ
Does WAV sound better than the MP3 source?
No. It preserves the decoded result without another lossy encode, but missing source detail remains missing.
Which sample rate should I choose?
Match the application receiving the WAV; 44.1 kHz is common for music and 48 kHz for video.
Why is the WAV so large?
PCM stores every sample instead of using MP3's space-saving compression.