MP3 to WAV
How to use
Decodes MP3 into uncompressed 16-bit WAV for audio editors, CD burning and speech tools. Drop the MP3s, pick a sample rate, and download.
Step 1 of 4: Upload
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Step 1 of 4 · Upload
- 1Upload
- 2Options
- 3Convert
- 4Download
- Importing audio into an editor, DAW or sampler that prefers WAV
- Preparing tracks for CD burning software
- Feeding audio into speech-recognition tools that require 16 kHz WAV
- Supplying WAV files to a video editor or broadcast system
Free and private. Everything runs on your own device, with no account and no uploads.
Converting MP3 to WAV does not make it sound better, the detail MP3 discarded is gone, but it does make the audio usable by software and hardware that expect uncompressed PCM. Audio editors cut and process WAV without re-decoding, CD burning tools require it, many samplers, DJ systems and speech-recognition pipelines take only WAV, and some video editors handle it more reliably than MP3. This tool decodes MP3 (or M4A, AAC, OGG, Opus, FLAC) into standard 16-bit WAV.
No. The WAV is an exact, uncompressed copy of what the MP3 decodes to, including anything MP3 removed. It stops further loss when editing, but cannot restore what was lost.
Uncompressed 16-bit stereo at 44.1 kHz takes about 10 MB per minute. A 5 MB MP3 typically becomes a 45–55 MB WAV.
Standard PCM WAV, 16-bit little-endian, at the sample rate and channel count you choose: the most widely compatible WAV variant.
MP3 encoders add a few milliseconds of padding, and decoders reproduce it. It is typically under 50 ms and is normal.
Most speech models, including Whisper, work at 16 kHz mono. Converting to that directly avoids resampling later and produces a much smaller file.
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Add MP3 files
Drop MP3s or other compressed audio such as M4A, OGG or FLAC.
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Pick a sample rate
44.1 kHz for CDs and music software, 48 kHz for video, 16 kHz for speech-recognition models.
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Choose channels
Keep stereo, or mix down to mono if the destination expects a single channel.
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Convert and download
Expect the WAV to be about ten times the size of the MP3.
- ·Use 16 kHz mono for transcription tools: it is what they resample to anyway
- ·Match the sample rate of your project (usually 48 kHz for video) to avoid another conversion
- ·Keep the MP3 as well; the WAV is a working copy, not a better original