MP3 to WAV — Convert Online for Free
Convert MP3 to WAV right in your browser: uncompressed audio for editing and processing. Nothing is uploaded — everything runs locally.
Drag and drop your file here or click to select
About the conversion
WAV stores the waveform without compression, which is exactly why editing suites, studio plugins, game engines and some audio hardware ask for it. If a tool refuses to open your MP3 or insists on plain PCM audio, converting to WAV settles it in one step.
To be straight about it: MP3 is lossy, and converting to WAV does not bring back what compression threw away. WAV simply unpacks what remains into an uncompressed form. The sound will not improve — but it will stop being re-compressed at every processing step, which is the real reason WAV is used in editing.
Expect the file to grow: the result is roughly seven to ten times heavier than the source MP3, because an uncompressed minute of 44.1 kHz stereo takes about 10 MB. For long recordings that adds up, so people usually convert only the parts they actually need to work on. Everything is computed in the browser and the file stays with you.
Frequently asked questions
Why convert MP3 to WAV?
Usually for compatibility: video editors, audio workstations, game engines and some hardware expect uncompressed PCM audio. WAV also avoids re-compression at each processing step, which matters during editing.
Will the audio quality improve?
No, and this is the key point. MP3 discarded part of the data during compression and it cannot be recovered. WAV simply stores what is left without compression — the sound stays the same, only the format and file size change.
How much bigger will the file get?
Around seven to ten times. A minute of uncompressed 44.1 kHz stereo takes roughly 10 MB regardless of the source MP3's bitrate, so a three-minute song becomes a file of about 30 MB.
What sample rate will the result have?
By default the source file's rate is kept, but you can change it in the settings before converting. If the file is meant for a specific program or device, check the required rate in its documentation.
Is the audio uploaded anywhere?
No. The file is processed in your browser on your own device and is never transmitted — not to our server, not anywhere else.