WAV to MP3 converter

Make a small MP3 from a WAV master, a bounce or a recording. Pick the bitrate, keep or change the sample rate, and download the file. The conversion runs in your browser, so nothing is uploaded and there is no queue.

This page needs JavaScript for the tool itself. Open it in a browser to use it.

How it works

Drop the WAV on the page. Your browser reads the PCM audio, this page resamples or mixes it if you asked for that, and an MP3 encoder running in a background thread writes the file. The result is saved from your own device.

Choose the bitrate

320 kbps is the best MP3 can do and the right choice for a master you will share with musicians or upload to a platform that accepts MP3. 192 kbps is transparent for most listeners and half the size. 128 kbps suits speech and demos. A 4-minute track is about 10 MB at 320 kbps, 6 MB at 192 kbps and 4 MB at 128 kbps.

Sample rate and channels

The MP3 keeps the WAV's sample rate by default. MP3 stops at 48000 Hz, so a 88200 Hz or 96000 Hz WAV is resampled to 48000 Hz; pick 44100 Hz if the file is going to a CD-based workflow. Mono halves the size for voice recordings; a stereo WAV stays stereo unless you mix it down.

Keep the WAV

MP3 is for sharing and listening. Keep the WAV as the master, because the detail MP3 removes cannot be recovered from the MP3 later. If you still need to master the track, do that on the WAV first and convert the finished master.

Master the WAV first

From the label's own toolbox

BeatRootRaga is an independent label. Every release starts as a WAV master and ends up as an MP3 for the people who need a quick listen, so this converter is used in the label's own work and is online for anyone.

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Questions people ask

Which bitrate should I use for music?

320 kbps if size does not matter, 192 kbps as a good everyday choice. Below 128 kbps the loss becomes audible on music, though speech is fine at 64 to 96 kbps.

Does a 24-bit WAV convert?

Yes. 16-bit, 24-bit and 32-bit float WAV files all convert; the bit depth is not part of an MP3, only the sample rate and bitrate are.

Why is 96000 Hz not offered for MP3?

The MP3 format goes up to 48000 Hz. A 96000 Hz WAV is resampled to 48000 Hz, which is above what any MP3 bitrate can carry anyway.

Is the WAV to MP3 converter free, and is my file uploaded?

Free, no account, no watermark, and nothing is uploaded. The file is encoded inside your browser.

Does the MP3 keep the metadata?

No. Titles, artist names and artwork are not copied. Add them in your player or tag editor after downloading.