Free

Free WAV to MP3 Converter Online

A free WAV to MP3 converter: turn WAV audio into universal MP3 with the LAME encoder — 128, 192, or 320 kbps.

Free tool · No sign-up · Private

Drop in a WAV file

WAV files up to ~50MB. Decoded and encoded 100% in your browser with the LAME encoder — your file never leaves this device.

Private by design. Decoding and encoding run 100% in your browser. Your WAV is never uploaded, stored, or seen by anyone.

Formats & limits

What you can convert

Straightforward limits, stated plainly.

WAV in, MP3 out

This page converts WAV (.wav) files only — the uncompressed format behind CDs, studio recordings, and voice recorders. PCM at 16, 24, or 32 bit, mono or stereo: if your browser can play it, this tool can convert it.

The LAME encoder

MP3s here are encoded with LAME, the reference MP3 encoder trusted by professionals for over two decades. Three honest bitrates: 128 kbps for the smallest files, 192 for everyday music, 320 for the best quality MP3 offers.

~50 MB file cap

Decoding and encoding happen in your browser's memory, so files are capped at about 50 MB. A 3-minute CD-quality WAV is roughly 30 MB, so most songs and recordings fit comfortably.

Private by design

The ~150 KB encoder loads once per visit, and your audio never leaves your device — it never touches a server. No accounts, no uploads, no watermarks on your MP3.

How it works

Three steps to your MP3

Drop in a WAV file

Choose a .wav file up to ~50MB. It stays on your device — the page never uploads it anywhere.

Pick a bitrate

128 kbps for the smallest file, 192 for the music sweet spot, 320 for best quality. Then press “Convert to MP3”.

Preview and download

Listen to the MP3 right on the page to check it, then download it. It plays on every phone, computer, and car stereo.

Use cases

When conversion helps

MP3: the format everything speaks.

Shrink huge recordings

A 3-minute WAV is about 30 MB; the same audio as a 192 kbps MP3 is under 4.5 MB. Same listening experience, roughly one-seventh the size — easy to email, message, or upload.

Share with everyone

MP3 plays on every device ever made: phones, laptops, car stereos, smart speakers. A WAV exported from a recorder or music app doesn't always.

Prep for podcasts and uploads

Podcast hosts, video editors, and music distributors expect MP3. Export your WAV master, convert it here, and upload the smaller file.

Voice recordings to go

Recorders and phones often save voice as WAV. Convert to MP3 and the file is small enough to attach to any email or chat without a fight.

FAQ

WAV converter questions

Will converting WAV to MP3 lose quality?

MP3 is a lossy format, so data is compressed — but at 192–320 kbps the difference from the original WAV is inaudible to nearly everyone. Rule of thumb: keep your WAV as the archive master, and share or listen to the MP3.

What bitrate should I choose?

128 kbps for the smallest files (fine for speech), 192 kbps as the everyday sweet spot for music, 320 kbps for the best quality MP3 can offer. One honest note: converting can't add quality that isn't in the source — match the setting to your needs.

How big can my WAV file be?

Up to about 50 MB. Decoding and encoding happen in your browser's memory, so very long high-resolution recordings are best converted in a desktop browser. A 3-minute CD-quality WAV is roughly 30 MB, so most songs fit comfortably.

Do I need to install anything?

No. This WAV to MP3 converter runs entirely in your browser — on phones, tablets, and desktops. The LAME encoder (~150 KB) loads once per visit, and conversions after that are instant.

Is my audio uploaded anywhere?

No. Your WAV is decoded and re-encoded locally in your tab. The file never leaves your device — there is no server receiving it, no account, and no watermark added to your MP3.

Keep exploring