MP3 to WAV Converter
Upload MP3 files or drag and drop
MP3 files. Converted to WAV in your browser - nothing is uploaded.
Conversion runs entirely in your browser using WebAssembly. Your audio is never uploaded. Large files use more memory, so very long recordings may be slow on older devices.
Turn MP3 files into uncompressed WAV without uploading them anywhere. WAV is the format most audio editors, DAWs and some hardware players prefer because it stores full 16-bit PCM audio with no further compression. Add one MP3 or a batch, convert on your device, and download. Because it runs in your browser, your files stay private and the tool keeps working even offline.
How to use this tool
- 1Drop your MP3 files onto the upload area, or click to browse. Add several if you need to.
- 2The output is fixed to WAV, so there is nothing else to configure.
- 3Click Convert to WAV. Each file decodes and re-encodes on your device with a progress bar.
- 4Download each WAV, or grab them all as a zip when you convert a batch.
Example
Add a 4 MB MP3 and click Convert to WAV. You get a WAV of roughly 40-50 MB because WAV stores uncompressed audio. The WAV keeps the MP3's sample rate, for example 44.1 kHz stereo.
Drop ten short MP3 sound effects, convert, and download the zip. Each becomes a WAV you can drag straight into a sampler or editing timeline.
Common use cases
- Preparing an MP3 for an audio editor or DAW that works best with WAV
- Loading audio onto hardware samplers or old players that only read WAV
- Getting an uncompressed working copy before editing so repeated saves do not add MP3 artifacts
- Meeting a submission requirement that asks for WAV files
Common mistakes
- Expecting the WAV to sound better than the MP3 - it cannot recover detail the MP3 already removed, it just stops further quality loss during editing.
- Being surprised the WAV is much larger - uncompressed WAV is typically 8-12x the size of the MP3.
- Using WAV for sharing or upload where size matters - keep the MP3 for that and use WAV only for editing.
- Converting back and forth repeatedly - one MP3 to WAV conversion is enough for an editing copy.
Frequently asked questions
What is a WAV file?
WAV is an uncompressed audio format that stores full PCM samples. It is the standard working format for editors and DAWs because it has no lossy compression, so repeated edits and saves do not degrade the sound the way re-saving an MP3 would.
Does converting MP3 to WAV improve quality?
No. The MP3 already discarded some audio data, and converting to WAV cannot bring it back. What WAV gives you is a clean, uncompressed copy that will not lose further quality while you edit and re-save it.
Why is the WAV so much bigger than the MP3?
MP3 uses lossy compression to shrink files, while WAV stores every sample uncompressed. A three-minute MP3 of a few megabytes becomes a WAV of roughly 30-50 MB depending on sample rate and channels.
Is my MP3 uploaded anywhere?
No. The conversion runs entirely in your browser, so your MP3 is never sent to a server. You can even disconnect from the internet after the page loads and the tool will still convert your files.
What sample rate and bit depth is the WAV?
The WAV keeps the sample rate of the decoded MP3, commonly 44.1 kHz, and is written as 16-bit PCM. Channel layout is preserved too, so a stereo MP3 produces a stereo WAV.
Can I convert several MP3 files at once?
Yes. Add as many MP3s as you need and they convert one after another. When more than one finishes you can download them together as a single zip archive.
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