WAV to MP3

To convert WAV to MP3, first pick your quality in the Bitrate dropdown above the drop area — 96k, 128k, 192k (the recommended default), 256k, or 320k — then drag and drop your WAV files onto the drop area, or click it to choose them. Conversion starts automatically, and each finished MP3 appears with a Download button. Set the bitrate before you add files, since it is read as each file is converted. You can add several WAV files at once and they are processed one after another; every row shows the new filename, its size, and an inline preview player so you can listen before downloading. Everything runs in your browser through a WebAssembly build of FFmpeg, so your audio is never uploaded anywhere.

Yes — converting WAV to MP3 always discards some audio data, because WAV is uncompressed and lossless while MP3 is a lossy format that throws information away to make the file far smaller, and that detail cannot be recovered afterwards. At 192 kbps or higher most listeners will not notice on normal playback gear. Keep your original WAV if you might edit or re-encode the audio later.

Pick 192 kbps for general listening, 256 or 320 kbps for music you care about or files you may re-encode later, and 128 or 96 kbps when small size matters more than fidelity, such as voice memos, lectures or spoken-word podcasts. A higher bitrate keeps more of the original WAV's detail but produces a bigger MP3, so it is a straight trade-off between size and quality.

Yes — it is completely free with no signup, no account, no watermark and no software to install, and it is private because your WAV file never leaves your computer: the conversion runs inside your browser using a WebAssembly build of FFmpeg, so nothing is uploaded to any server. That makes it safe for confidential interviews, client recordings, legal audio or unreleased music.

There is no size limit imposed by this site, because there is no upload at all — the only real constraint is how much memory your own device has available. WAV files are big by nature, at roughly 10 MB per minute for CD-quality stereo, so recordings running past a few hundred megabytes can be slow or exhaust memory on a phone. For long sessions, use a desktop browser.

WAV stores uncompressed PCM audio, so it costs roughly 10 MB per minute for CD-quality stereo no matter what the recording contains, while MP3 compresses that heavily — at the default 192 kbps, a minute of audio works out to about 1.4 MB. The saving is dramatic, and the result plays practically everywhere. If you want a big size cut with no quality loss at all, convert to FLAC instead: it is lossless and roughly half of WAV's size.

Yes — the converter works in any modern browser on Windows, Mac, Linux, iPhone and Android, with no app or plugin to install, and the MP3 it produces plays on essentially every phone, computer, car stereo and media player out there. The first conversion downloads the roughly 32 MB converter engine once; your browser then caches it, so later conversions start instantly. On phones, stick to shorter recordings.