Will converting to WAV improve the sound?

No, and Filesvo won't pretend it does. The WAV contains exactly what the MP3 contained, stored without further loss. The benefit is compatibility and edit-friendliness, not quality.

Are my files uploaded?

No. The first time you use an audio/video tool, your browser downloads the open-source FFmpeg engine — a 32 MB file, roughly 10 MB once your connection compresses it — as a static file, and that is the only network traffic. Your media files are then processed entirely on your device and never reach a Filesvo server.

Does this work on phones?

Yes on recent devices, with limits: the engine is a 32 MB file (roughly 10 MB compressed in transit), and phones have less memory available to the browser, so large videos can fail on mobile. If a file fails on your phone, try a smaller file or a desktop browser. The 100 MB per-file limit applies everywhere.

Convert MP3 to WAV Online

Some audio editors, hardware samplers and CD-burning tools only accept WAV. This tool decodes your MP3 into a standard 16-bit PCM WAV file — the most universally accepted audio format — at the source's original sample rate.

or drag and drop a .mp3 file here — up to 100 MB

This tool runs the open-source FFmpeg engine in your browser. First use downloads it once (a 32 MB file, roughly 10 MB compressed in transit); after that it loads from your browser cache. Your files are never uploaded. The engine is ffmpeg.wasm, distributed unmodified under the GPL-2.0-or-later.

Processed on your device — files are never uploaded to Filesvo.

How to use Filesvo

Select or drop an MP3 file (up to 100 MB).
Click Convert to WAV.
Download the WAV — expect it to be roughly 5–10× larger than the MP3.

About MP3-to-WAV conversion

Converting to WAV decodes the MP3 exactly as a player would and writes the raw samples to disk. It's the right move when a tool in your workflow demands WAV input, or before edits that would otherwise force repeated MP3 re-encoding.

Be clear about what it can't do: the detail the original MP3 encoder discarded is gone forever, so the WAV sounds identical to the MP3 — not better. A tool that claims to 'restore quality' this way would be lying to you.

The FFmpeg command this runs

This tool is FFmpeg itself, compiled to WebAssembly and running in your browser. Below is the command it builds with the options set as they arrive — generated from the same code that performs the conversion, not written out by hand, so it cannot drift out of date. Paste it into a terminal with FFmpeg installed and it does the same job there.

ffmpeg -y -i input.mp3 -vn -c:a pcm_s16le output.wav

The input and output names are placeholders. Your own filenames are used inside the browser, and neither file leaves your device.

Private by design

Your files are processed directly in your browser using the open-source FFmpeg engine compiled to WebAssembly and are not uploaded to Filesvo. Nothing is stored on our servers, because nothing ever reaches them.

The engine is a static file your browser downloads once and then caches — the only network request this tool makes. It is used exactly as its authors published it; see the engines and their licences.

Frequently asked questions

Will converting to WAV improve the sound?: No, and Filesvo won't pretend it does. The WAV contains exactly what the MP3 contained, stored without further loss. The benefit is compatibility and edit-friendliness, not quality.
Are my files uploaded?: No. The first time you use an audio/video tool, your browser downloads the open-source FFmpeg engine — a 32 MB file, roughly 10 MB once your connection compresses it — as a static file, and that is the only network traffic. Your media files are then processed entirely on your device and never reach a Filesvo server.
Does this work on phones?: Yes on recent devices, with limits: the engine is a 32 MB file (roughly 10 MB compressed in transit), and phones have less memory available to the browser, so large videos can fail on mobile. If a file fails on your phone, try a smaller file or a desktop browser. The 100 MB per-file limit applies everywhere.

WAV to MP3

Convert uncompressed WAV recordings into small, universal MP3 files at the bitrate you choose.

Compress Audio

Shrink MP3, WAV, M4A, OGG and FLAC files to a bitrate you choose, with honest before/after sizes.

MP4 to MP3

Extract the audio track from an MP4 video as an MP3 file — entirely in your browser with the FFmpeg engine.