MP3 to WAV Converter Free
Convert MP3 files to uncompressed WAV audio online for free. Choose sample rate (44.1 kHz, 48 kHz, 96 kHz) and bit depth (16-bit, 24-bit, 32-bit float). WAV is required for audio editing software, DAWs, and professional audio production. No signup, no watermark, batch up to 10 files.
Drop your MP3 files here
MP3 · M4A · AAC · OGG · FLAC — up to 10 files
0 file(s) selected
WAV Output Settings
No account required · Files deleted in 24h
Converting to WAV…
Decoding audio
0%
Pro — batch 100 files, AIFF output, channel mapping, metadata preserve, API
API access · Priority queue · Team workspace
How It Works
Upload Audio
Upload up to 10 MP3, M4A, AAC, OGG, or FLAC files. The converter accepts any lossy audio format and decodes it to raw PCM audio data in memory. This is the first step in the conversion — the compressed audio stream is fully decoded so it can be re-encoded into the uncompressed WAV container format.
Set WAV Parameters
Choose the sample rate and bit depth for the output WAV. For most uses, 44,100 Hz 16-bit PCM matches CD quality. For video production, choose 48,000 Hz as this is the broadcast and video editing standard. For studio recording and DAW editing, 24-bit or 32-bit float at 48k or 96k provides more headroom and precision.
Download WAV
Download your uncompressed WAV file. Note that WAV files are much larger than MP3 — a 5-minute MP3 at 128 kbps is about 5 MB, while the same audio as 44.1 kHz 16-bit WAV is about 50 MB. This is expected — WAV stores every sample without compression. Multiple files are zipped for download.
MP3 to WAV Features
Uncompressed PCM WAV
The output is a standard PCM WAV file — the same format used for CDs, studio recordings, and audio editing software. WAV (Waveform Audio File Format) stores raw, uncompressed audio samples in a simple RIFF container. This makes WAV universally compatible with every audio software, hardware sampler, and editing platform without requiring a codec.
Sample Rate Selection
44,100 Hz is the CD standard and the most common sample rate for music. 48,000 Hz is used for video production — virtually all video editing software, HDMI audio, and broadcast standards use 48k. 96,000 Hz (high-res audio) doubles the frequency ceiling to 48 kHz and is used in professional mastering and audiophile releases. 22,050 Hz halves file size vs 44.1k at the cost of HF content.
Bit Depth Options
16-bit PCM provides 96 dB of dynamic range — sufficient for finished music distribution and CD. 24-bit PCM provides 144 dB dynamic range, giving headroom for mixing and mastering without clipping. 32-bit float is used internally by DAWs (Reaper, Logic, Ableton) — it allows values outside the 0.0–1.0 range without hard clipping, making it the safest format for audio editing where levels may temporarily exceed 0 dBFS.
Multiple Input Formats
Accepts MP3 (MPEG Layer 3, most common), M4A (Apple audio, AAC codec), AAC (Advanced Audio Coding, used in streaming), OGG Vorbis (open-source, used in games and web audio), and FLAC (lossless compressed audio — converted to PCM WAV without quality loss). Each input format is decoded using its native codec before WAV encoding.
Batch — 10 Files
Convert up to 10 audio files to WAV in a single batch. Useful for converting a whole album, a set of sound effects for a game, or voice-over recordings for video editing. All files are processed with the same sample rate and bit depth settings and packaged in a ZIP archive for download.
Private & No Account Needed
All uploads are TLS 1.3 encrypted. Files are processed in isolated containers and permanently deleted within 24 hours. No watermark, no account required. Audio files are never stored beyond the conversion window.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Files per batch | 10 | 100 |
| Max file size | 50 MB | 500 MB |
| AIFF output | — | |
| Metadata preserve | — | |
| API access | — | |
| Watermark | None | None |
Frequently Asked Questions
No — converting MP3 to WAV does not recover any audio quality lost during MP3 compression. The MP3 format uses lossy compression that permanently removes audio data it deems inaudible (frequencies, transients, low-level detail). Converting to WAV packages the same degraded audio in an uncompressed container — it gets larger but no cleaner. The benefit of WAV is not improved quality, but compatibility: audio editors like Audacity, Logic Pro, Pro Tools, and Ableton require or strongly prefer uncompressed audio for editing, processing, and multi-track mixing.
MP3 compresses audio by 10:1 or more using psychoacoustic modelling — it removes information the ear is thought to not notice. A standard 128 kbps MP3 is roughly 1 MB per minute. A 44.1 kHz, 16-bit stereo WAV is about 10 MB per minute (1411 kbps uncompressed). This size difference is normal — WAV stores every audio sample without any compression. For archiving, sharing, or streaming, use MP3 or AAC. For editing, mastering, or integration into video projects, WAV is the correct format.
Always use 48,000 Hz (48 kHz) for audio that will be used in video projects. This is the industry standard for video production, broadcast television, HDMI audio, YouTube, Netflix, and virtually every video editing application (Premiere Pro, Final Cut, DaVinci Resolve). Using 44.1 kHz audio in a 48 kHz video project requires sample rate conversion, which can introduce artifacts if done poorly. 48 kHz WAV is the safest choice for any video-related audio work.
16-bit PCM stores each audio sample as a 16-bit integer, giving 65,536 possible amplitude values and 96 dB dynamic range. Sufficient for finished music. 24-bit PCM uses 24-bit integers — 16.7 million amplitude values and 144 dB range. Used for recording and mixing where headroom is needed. 32-bit float stores samples as floating-point numbers with much larger range — it allows clipping (values above 0 dBFS) to be stored and later corrected without permanent distortion, making it ideal for DAW internal processing.
Yes — FLAC (Free Lossless Audio Codec) is a losslessly compressed format that stores audio identically to uncompressed PCM. Converting FLAC to WAV is a pure container change — all audio data is preserved exactly. The resulting WAV will be identical in audio quality to the FLAC source. The only difference is file size: FLAC is typically 40–60% smaller than the equivalent WAV, so converting to WAV increases the file size without any audio quality change.
Yes. TLS 1.3 encrypted uploads. Files deleted within 24 hours. No watermarks. No account required.