MP3 to WAV Converter
Convert MP3 to WAV for audio editors, DAWs, samplers, DJ software and CD burning. ProMedia decodes each MP3 in your browser and writes standard PCM WAV at 16 or 24 bits, at the original sample rate or the one you choose. Batches are fine, the files never leave your device, and the converter costs nothing.
- Runs on your device
- WebCodecs · GPU
- Web Audio
- Works offline
Updated
Drop your audio files here
How to convert MP3 to WAV
Step 1: Add the MP3s you need as WAV: drag them onto the box above, or tap it on a phone to pick them.
Step 2: Keep Bit depth at 16-bit for playback and CDs, or choose 24-bit if the audio is going into a DAW.
Step 3: Under Advanced settings, set Sample rate to 44.1 kHz for a CD or 48 kHz for video editing; Original keeps the MP3’s rate.
Step 4: Press Convert. Each WAV gets its own result card with a download button, and Download all bundles a batch into a ZIP.
Good to know
Settings explained
- Bitrate
- 128 kbps is fine for speech, 192 kbps for music, 320 kbps is the MP3 maximum.
- OGG codec
- Godot, Unity and older players need Vorbis. Vorbis uses the FFmpeg engine (≈31 MB, downloaded once).
- Opus: Smaller
- Vorbis: Games, older players
Formats
Batch-friendly: add many files and they are processed one after another — if one fails, the rest still finish.
How it runs
- Hardware video engine
- Video is decoded and encoded by your device’s media hardware through WebCodecs — usually several times faster than real time.
- Web Audio
- Audio is processed with the browser’s built-in Web Audio engine, sample-accurate and fast.
Does converting MP3 to WAV improve quality?
No. An MP3 has already discarded part of the original sound, and writing it out as WAV cannot bring that back: the WAV is an exact, uncompressed copy of what the MP3 decoder produces. What you gain is compatibility and convenience for editing, not fidelity.
| MP3 (before) | WAV (after) | |
|---|---|---|
| Audio detail | What the MP3 encoder kept | Exactly the same, nothing restored |
| File size (stereo, 1 minute) | 1.44 MB at 192 kbps | 10.6 MB at 44.1 kHz / 16-bit |
| Decoding needed to play | Yes, every time | No, samples are stored as-is |
| Editing and re-saving | Each save adds new loss | No further loss |
| Accepted by | Players, phones, browsers | DAWs, samplers, CD burners, broadcast and many voice systems |
Why is the WAV so much bigger?
Because a WAV stores every sample uncompressed. A 192 kbps MP3 uses 192,000 bits per second; a CD-quality WAV of the same song uses 1,411,200, about seven times more. Bit depth, sample rate and the number of channels multiply the size directly, so a 24-bit 48 kHz WAV is larger again.
| Sample rate | Bit depth | Mono | Stereo |
|---|---|---|---|
| 22.05 kHz | 16-bit | 2.6 MB | 5.3 MB |
| 44.1 kHz | 16-bit | 5.3 MB | 10.6 MB |
| 44.1 kHz | 24-bit | 7.9 MB | 15.9 MB |
| 48 kHz | 16-bit | 5.8 MB | 11.5 MB |
| 48 kHz | 24-bit | 8.6 MB | 17.3 MB |
What is a WAV file?
A WAV file is a RIFF container, created by Microsoft and IBM, that usually holds linear PCM: raw sample values with no compression. The header says how many channels there are, how many samples per second and how many bits per sample, and the rest of the file is the samples themselves. That simplicity is why almost every audio editor, sampler and broadcast system reads WAV without a codec.
The WAV files written here are 16-bit or 24-bit integer PCM, the two variants every editor supports. Stereo MP3s stay stereo; choose Mono under Advanced settings if a voice system asks for one channel.
16-bit or 24-bit: which WAV should you pick?
16-bit is the CD standard and more than enough to hold everything an MP3 contains. Use it for playback, CD burning, DJ software and most upload forms. 24-bit does not make an MP3 sound better, but it gives an editor more headroom when you are about to apply gain, EQ or effects and export again, which is why some DAW workflows ask for it.
For sample rate, keep Original unless the destination states a rate. Audio CDs need 44.1 kHz; video projects usually run at 48 kHz, and matching the project avoids a resample inside your editor.
Is it worth converting MP3 to WAV?
Only when something on the other end needs WAV. Otherwise the MP3 is the better file to keep.
- Yes: an editor, sampler or game engine imports WAV only, or handles it more reliably.
- Yes: a CD-burning app, radio playout system or phone system specifies PCM WAV.
- Yes: you will process the track several times and want to avoid a new lossy encode on every save.
- No: you hope it will sound better. It will sound identical and take about seven times the space.
- No: you only want to play or share the song. MP3 plays everywhere already.
Convert MP3 to WAV on Windows or Mac
There is nothing to install: the page works in Chrome, Edge, Firefox and Safari, and converts on your own computer.
Windows 10 and 11
Drag MP3s from File Explorer onto the drop zone. Windows has no built-in MP3 to WAV converter; Audacity can do it too if you prefer a desktop app.
Mac
Drag files from Finder into Safari or Chrome. The Music app can create WAV versions of songs in your library once its import encoder is set to WAV.
iPhone and Android
Open this page in Safari or Chrome, tap the drop zone and pick MP3s from Files or Downloads. WAVs are large, so keep an eye on free space for long tracks.
Tips & troubleshooting
Burning an audio CD? Set Sample rate to 44.1 kHz and keep 16-bit stereo, the Red Book CD format.
Only need part of the song? Cut it first with the MP3 cutter; cutting an MP3 without fades is lossless.
Going the other way to save space? WAV to MP3 shrinks WAVs by four to eleven times.
Need the audio from a video as WAV rather than from an MP3? MP4 to WAV skips the extra lossy step.
Want to change the tone before you export? The bass booster and equalizer can save straight to WAV too.
MP3 to WAV Converter FAQ
Does converting MP3 to WAV improve quality?
No. The WAV is an exact copy of the decoded MP3, so it sounds the same. The detail the MP3 encoder removed is gone for good. Converting is useful for compatibility and editing, not for better sound.
Why is my WAV file so much larger than the MP3?
WAV stores every sample uncompressed. At 44.1 kHz, 16-bit stereo that is about 10.6 MB per minute, roughly seven times a 192 kbps MP3. 24-bit or 48 kHz WAVs are larger still.
Should I choose 16-bit or 24-bit WAV?
Choose 16-bit for playback, CDs and most apps; it already holds everything in the MP3. Choose 24-bit only if your editor or DAW asks for it, or you will apply heavy processing and want extra headroom.
Can I convert MP3 to WAV at 44.1 kHz?
Yes. Open Advanced settings and set Sample rate to 44.1 kHz. Most music MP3s are already 44.1 kHz, so Original gives the same result for them; MP3s at 22.05 or 48 kHz are resampled with a high-quality filter.
Is the WAV standard PCM?
Yes. The files are uncompressed linear PCM in a RIFF/WAVE container, 16-bit or 24-bit signed integers, which every editor, DAW and CD-burning program reads.
How do I convert MP3 to WAV on Windows?
Open this page in Chrome, Edge or Firefox, drag the MP3 files from File Explorer onto the drop zone and press Convert. The WAV files are saved to your Downloads folder. Windows itself has no MP3 to WAV option, and nothing needs to be installed here.
Is my music uploaded to convert it?
No. Decoding and writing the WAV both happen inside your browser, on your device. No server receives the file, and the page keeps working offline once it has loaded.