Convert MP3 to WAV
Convert an MP3 into an uncompressed WAV for editing software, DJ apps, CD burning or any tool that only accepts WAV. The conversion runs in your browser.
Your file never leaves your device. How?
Your media is processed in your browser and is not uploaded to our servers for conversion. Page assets (including the converter engine) still load over the network.
Select or drop a video or audio file
MP4, MOV, WebM, MKV, M4A, WAV, FLAC, OGG and more. Converted on your device.
Click, tap, or drop a fileHow to convert MP3 to WAV
Choose the MP3
Drop or select the .mp3 file.
Check the size
WAV is uncompressed, so the page shows the expected size (about 10 MB per minute for stereo).
Convert
The MP3 is decoded to 16-bit PCM on your device.
Download the WAV
Open it in your editor or app.
When you need WAV instead of MP3
Some software only accepts WAV: older video editors, CD-burning programs, some DJ and sampler apps, phone-system and PA announcement tools, and academic or speech-analysis tools. Editing a WAV also avoids decoding the MP3 again every time you export.
Converting doesn't improve the sound. The WAV contains exactly what the MP3 decodes to, just uncompressed and about 7 to 11 times larger.
What happens to your MP3
FFmpeg in WebAssembly decodes the MP3 and writes it as 16-bit PCM WAV at the MP3's own sample rate (usually 44.1 or 48 kHz), mono or stereo as recorded.
Phone systems sometimes require 8 kHz mono WAV. This tool keeps the original sample rate, so check what your system needs.
Features
Editor ready
Standard 16-bit PCM WAV opens in every audio and video editor.
Nothing re-encoded twice
Decoded once, stored uncompressed.
Size shown first
See how large the WAV will be before converting.
Private
Your audio stays on your device.
Frequently asked questions
Is my file uploaded anywhere?
No. The conversion runs in your browser with a WebAssembly build of FFmpeg. Your file is read from your device and the result is saved back to it; nothing is sent to our servers.
Does converting MP3 to WAV improve the quality?
No. Detail removed by MP3 compression can't be restored. The WAV sounds exactly like the MP3; it's only easier for some software to handle.
How big will the WAV be?
About 10 MB per minute for 44.1 kHz stereo, so a 4-minute song is around 40 MB. Mono files are half that.
Can I choose 8 kHz mono for a phone system?
Not yet. The WAV keeps the MP3's sample rate and channels.
How long can the MP3 be?
WAV output has to fit in memory, so very long files are limited more than MP3 output. The page warns you before converting if a file is too long.
Is WAV the same as lossless?
WAV is uncompressed, but a WAV made from an MP3 is only as good as that MP3. For true lossless audio you need the original recording or a CD rip.
More from Audio Converter
Related: WAV to MP3 · Audio Cutter · Audio Converter · Increase Volume · All tools