Decompress audio to WAV — free
Turn a compressed file into an uncompressed WAV for editing or archiving. No install, no account required.
Turn a compressed file (MP3, OGG, M4A) into an uncompressed WAV. This cannot restore detail already lost in the original compression — it only stops further quality loss. 15MB max.
Full quality can produce very large WAVs (tens of MB). Prefer Voice or Speech for podcasts and voiceovers.
Free to try · No signup required · Commercial use allowed · How we test · About VoxCraft
Decompress a compressed audio file into an uncompressed WAV online for free with VoxCraft. Upload an MP3, OGG, M4A, AAC or similar lossy file and get back a standard WAV — useful when an editor, DAW, or another tool works better with (or requires) an uncompressed source.
One thing worth being upfront about: decompressing doesn't restore quality that's already gone. Lossy formats like MP3 permanently discard some audio detail at the moment they're first encoded — turning that MP3 into a WAV afterward can't bring that detail back, it just stops any further quality loss from happening on top of it during your next round of editing or re-encoding.
Where this genuinely helps: editing software that behaves better with WAV input, avoiding a second generation of lossy re-encoding when you'll be exporting to a compressed format again later, or simply wanting an uncompressed file to work with even if the underlying quality ceiling was already set by the original compression.
How it works
- Upload your compressed audio file (MP3, OGG, M4A, AAC, WMA — 15MB max).
- Tap Decompress to WAV.
- Wait a few seconds while it decodes.
- Download the uncompressed WAV file.
Who uses this
Editing in a DAW
Get a WAV source for editors/DAWs that expect or work better with uncompressed audio.
Avoiding double compression
Decode once to WAV before further editing, instead of re-encoding an already-lossy file repeatedly.
Format compatibility
Convert to WAV for a tool, plugin, or workflow step that doesn't accept compressed formats.
Tips for better results
- This can't undo quality already lost in the original compression — treat it as a format change, not a quality upgrade.
- If you still have the original uncompressed source (before it was ever compressed), use that instead of decompressing the compressed copy.
- Need to go the other way — shrink a file's size? Use Compress instead.
Frequently asked questions
Does this restore quality lost when the file was compressed?
No. Lossy compression permanently discards detail at encode time; decompressing to WAV can't recreate what's gone — it only stops further loss from here on.
What formats can I decompress?
Common lossy formats such as MP3, OGG, M4A, AAC, and WMA.
Why would I want a bigger, uncompressed file?
Some editors, DAWs, and workflow steps expect or work better with uncompressed WAV input than with a compressed format.
Is decompressing free?
Yes within free-tier limits, no account required to start.
Is there a file size limit to upload?
Yes, 15MB max per file.