Convert MPEG Audio Layer 1 (.mp1) to Waveform Audio (.wav) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .mp1 file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .wav file when it's ready.
Converting MP1 to WAV decodes the MPEG Audio Layer 1 bitstream and stores the resulting PCM audio in an uncompressed RIFF container. This is the reverse journey — MP1 was designed to compress PCM audio, and this conversion recovers the decoded PCM. The quality is limited to what the MP1 codec preserved during original encoding.
WAV is the most universally compatible uncompressed audio format, supported by virtually every audio application, DAW, and operating system. Decoding MP1 to WAV creates an editing-ready, processing-ready format from legacy compressed content.
WAV is the universal editing format. Every DAW, audio tool, and processing pipeline accepts WAV without question. If you need to edit, mix, process, or analyze MP1 audio, decoding to WAV is typically the first step.
WAV also serves as a decode-once archival format. Rather than re-decoding MP1 every time you need the audio, decode to WAV once and use the WAV as your master. This is especially useful if the MP1 source is on degrading media (old CDs, aging hard drives).
FFmpeg decodes the MP1 32-subband filter bank to reconstruct PCM samples at the original sample rate (typically 44.1 kHz). The PCM data is written into a RIFF/WAVE container at 16-bit depth. Output file size is approximately 10 MB per minute at 44.1 kHz stereo — roughly 10-15x larger than the MP1 source at typical bitrates.
WAV output preserves exactly what the MP1 decoder produces — no more, no less. MP1 at 384 kbps provides near-CD quality; at lower bitrates, subband coding artifacts (pre-echo, bandwidth limiting) are audible. The WAV faithfully captures these characteristics without adding or removing anything.
| Device | MP1 | WAV |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
MP1 to WAV decodes legacy MPEG audio to the universal uncompressed format. The WAV captures the maximum quality recoverable from the MP1 source.
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| Native |
| Funktion | MP1 | WAV |
|---|---|---|
| Fulde navn | MPEG Audio Layer 1 | Waveform Audio File Format |
| Filendelse | .mp1 | .wav |
| Bedst til | Early MPEG standard | Lossless quality |