Convert MP3 to WAV Online
Pick an MP3 file and convert it to uncompressed WAV on your device. Ideal for audio editing, production workflows, and CD burning.
How it works
- Upload your MP3 file. Drag your MP3 into the audio converter. Constant bitrate, variable bitrate, and joint-stereo MP3 files are all accepted.
- Select WAV. Choose WAV as the output format. DomeScribe writes 16-bit PCM at the source's sample rate — the format audio editors, DAWs, and CD-burning software expect.
- Convert. Click Convert. Decoding is fast; the result is ready in seconds for most files.
- Save the WAV. Save the file with a free account. Note that WAV is uncompressed: a 5 MB MP3 becomes roughly 40–50 MB.
Converter at a glance
- Video formats
- MP4, MOV, AVI, WebM, MKV, FLV — optional resolution (4K to 360p) and frame rate (60/30/24 fps)
- Audio formats
- MP3, WAV, FLAC, AAC, OGG, M4A
- Privacy
- Runs 100% in your browser (WebAssembly) — your file is never uploaded to a server
- Speed
- No upload wait — processing starts as soon as the in-browser engine loads (~31 MB, cached after the first run)
- File size
- Limited by your device's memory — up to about 500 MB works reliably
- Watermark
- None
- Limits
- Free — no monthly limit; runs on your device (a free account is needed to save the file)
Frequently asked questions
Does converting MP3 to WAV restore the original uncompressed quality?
No — converting an MP3 to WAV decodes the compressed audio into uncompressed PCM, but it cannot recover audio data that was discarded during the original MP3 encoding. The WAV will sound identical to the MP3, just stored in a lossless container.
Why would I convert MP3 to WAV if it does not improve quality?
Many audio editors, DAWs, and professional tools require uncompressed WAV input, and CD-burning software expects WAV files. Converting with DomeScribe gives you a format those workflows accept without any further quality loss during editing.
What bit depth and sample rate does the WAV use?
DomeScribe writes 16-bit PCM at the source's sample rate — 44.1 kHz for most MP3s, which is CD quality. There is no bit-depth picker; 16-bit is what the MP3 codec targets anyway.
How much larger will the WAV file be compared to the MP3?
Substantially larger. A 5 MB MP3 typically expands to 40–50 MB as WAV, because WAV stores every audio sample without compression. Make sure you have the disk space before converting many files.
Can I use the converted WAV file for CD burning?
Yes. A 16-bit, 44.1 kHz stereo WAV — what DomeScribe produces from a standard MP3 — is the Red Book CD audio format, ready to burn with any burning software.
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