MP3 to WAV
Free online converter
Drop an MP3 and get an uncompressed 16-bit / 44.1 kHz WAV for DAW editing, mastering, or CD burning. No watermark, no email.
Drop your .mp3 file
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Max 25 MB · .mp3 only
How MP3 to WAV conversion works
Conversion preview
Why use Mictoo for MP3 to WAV?
When MP3 to WAV is useful
Tips for clean MP3 to WAV
- WAV is 10× larger than MP3 (about 10 MB per minute).
- The output is not "true" lossless — it preserves the MP3 signal.
- For real lossless audio, start from a FLAC or original WAV master.
- Keep the source file under the current 25 MB upload limit.
What happens during conversion
We extract the audio from your MP3 and encode it as WAV.
MP3 vs WAV
| File type | Typical size | Best use |
|---|---|---|
| MP3 | Small (~1 MB/min) | Sharing, phones, streaming |
| WAV | Large (~10 MB/min) | Editing, mastering, CD burning |
Decoding is not restoring
This turns MP3 back into raw PCM. The file gets roughly ten times bigger and carries exactly the same audio information it had as an MP3. Nothing is recovered.
- 128 kbps MP3
- About 1 MB per minute
- 16-bit, 44.1 kHz stereo WAV
- About 10.1 MB per minute
- What comes back
- Nothing. Everything the encoder discarded stays discarded
- Practical effect
- A 25 MB MP3 becomes roughly a 250 MB WAV
When you genuinely need PCM
There are real workflows that only accept WAV, and this is the tool for those.
- DAW import
- Some editors decode MP3 unreliably or shift the start of the file
- Hardware
- Samplers, older field recorders and some CDJ gear read WAV only
- Burning an audio CD
- Red Book audio is PCM by definition
- Long edit sessions
- Decoding once up front beats re-decoding the MP3 on every scrub
What you get back
Standard, uncompressed, no surprises.
- Format
- 16-bit, 44.1 kHz, stereo PCM
- Encoder delay
- The decoder handles MP3 padding, so the start is not shifted
- Metadata
- ID3 tags do not survive. WAV carries almost none
- Only after text?
- Do not convert. Upload the MP3 directly to our MP3 to text tool
Frequently asked questions
Does converting MP3 to WAV recover lossless quality?
No. MP3 is lossy; the WAV preserves the MP3 signal but nothing more. For true lossless, you need to start from a FLAC or original WAV.
Is the converter free?
Yes. Files up to 25 MB can be converted without an account, and the output has no watermark.
Why is the WAV file so much larger?
WAV is uncompressed PCM. A 5 MB MP3 becomes roughly a 50 MB WAV. That is normal.
What bit depth and sample rate?
16-bit / 44.1 kHz stereo (CD quality). This is the standard DAW-import format.
Are files stored?
No. Uploaded MP3 is dropped after conversion; the WAV is purged within the hour.