MP3 to WAV Converter

Convert MP3 to WAV without fuss or uploads

This MP3 to WAV converter decodes MP3 files into uncompressed PCM WAV — the format every audio editor, DAW, sampler, video editor and CD-burning program accepts. Drop in one MP3 or a batch, choose the bit depth, and the WAV files are produced right in your browser, so nothing is uploaded and there is no size limit.

WAV is the obvious next step when an MP3 needs work. Editing software works on raw samples, and saving a project back to MP3 after every edit would compress it again each time. Decode once to WAV, edit as often as you like, and encode only the finished result. WAV is also what many hardware samplers, broadcast playout systems and older CD-burning tools insist on.

One thing a WAV can’t do is undo MP3 compression. The file holds exactly what an MP3 decoder outputs — several times more data than the MP3, with the same sound — and the converter says so plainly rather than promising “studio quality”.

How to use the MP3 to WAV Converter

1. Drop your MP3 files on the upload area or click it to choose them. Each file lists its length, sample rate, channels and bitrate.
2. Leave Bit depth on “Match the source” for standard 16-bit WAV, or choose 24-bit or 32-bit float if you plan heavy editing.
3. Keep the Sample rate unless your project needs another — pick 48 kHz for video timelines, 44.1 kHz for audio CDs.
4. Choose a WAV tag format: RIFF INFO for the widest compatibility, or an ID3 chunk to keep the album art as well.
5. Press Convert to WAV, check the result in the right-hand player, and download it. Several files can be saved as one ZIP.

MP3 to WAV Converter features

How big will the WAV be?

Uncompressed audio has a fixed data rate: sample rate × bit depth × channels. For CD-style 44.1 kHz, 16-bit stereo that is 44,100 × 16 × 2 = 1,411,200 bits per second, or about 10.1 MB per minute — roughly seven times a 192 kbps MP3 and 4.4 times a 320 kbps one.

Choosing bit depth and sample rate

• 16-bit matches audio CDs, and its 96 dB of dynamic range already exceeds what an MP3 delivers, so it holds the decoded sound without compromise.
• 24-bit or 32-bit float make sense when the WAV starts an editing session: effects, gain changes and mixing then have headroom to spare, and 32-bit float can’t clip while you work.
• 44.1 kHz is the rate of nearly all music MP3s and the only rate an audio CD accepts. 48 kHz is the video standard, so choose it when the WAV goes into a video editor.
• Converting between 44.1 and 48 kHz is inaudible in practice, but doing it here saves your editor a conversion on import.
• A standard WAV can’t exceed 4 GB — about 6 hours 45 minutes of CD-quality stereo. Longer files are written as RF64, the extended WAV format most editors read.

Why the WAV starts with a little silence

MP3 encoders add a short delay at the start — with LAME typically about 1,100 samples, roughly 25 milliseconds at 44.1 kHz once the decoder’s own delay is included — plus padding at the end to fill the last frame. Gapless-aware players skip it using the encoder’s header; a plain decode keeps it. If you are lining up loops sample-accurately, trim the start in the Audio Cutter after converting. To go back to a compact file when you have finished editing, use WAV to MP3.