Convert WAV to MP3, free.
Drop a WAV — a recording, an export, any uncompressed PCM audio — and get back a much smaller MP3 that plays and shares anywhere. It converts on your device, so the file never leaves it.
How to convert WAV to MP3
- Drop your WAV in. Choose or drag a .wav file — it loads in your browser and is never uploaded.
- Convert. Click Convert; the uncompressed PCM audio is re-encoded to MP3 on your device.
- Download. The MP3 saves straight to your device — a fraction of the WAV’s size, ready to send or upload.
Why WAV files are worth converting
WAV is an uncompressed format: it stores raw PCM samples with nothing thrown away. That makes it the go-to for recording and editing, where you want a pristine master — but it also makes the files big, often ten times larger than the equivalent MP3. A short interview or song can easily be tens or hundreds of megabytes.
That size becomes a problem the moment you need to share it. Email attachments, upload forms, messaging apps, podcast hosts and cloud storage all deal with MP3 far more happily than a heavy WAV. Converting trades a sliver of quality most people never notice for a file that goes anywhere. Keep the WAV as your archive copy, and hand out the MP3.
Before converting a recording or master
If the WAV is a finished mix or a recording you care about, keep the original as your source and treat the MP3 as a delivery copy. Re-encoding from lossless WAV to lossy MP3 is perfect for sending and publishing, but it is a one-way trade — you cannot rebuild the lost detail by converting back.
If your browser cannot decode a particular WAV, it usually means the file uses an unusual sample format or codec rather than standard PCM. In that case, re-export a plain 16- or 24-bit PCM WAV from the original app first. TrackMix only works with files your browser can read locally, which keeps the conversion private and avoids any server upload.
Frequently asked questions (5)
Is the WAV to MP3 converter free?
Yes — completely free, with no sign-up, no watermarks, and nothing uploaded.
Do my files get uploaded?
No. Conversion runs entirely in your browser, so your audio never leaves your device.
Why is my WAV file so large?
WAV stores uncompressed PCM audio, so even a few minutes can run to tens of megabytes. MP3 compresses that down to roughly a tenth of the size, which is why it is far easier to email, upload or store.
Does converting WAV to MP3 lose quality?
WAV is lossless and MP3 is lossy, so encoding to MP3 discards some data to shrink the file. At the default bitrate it is very hard to hear on speech or casual listening. Keep the original WAV if you need a master copy.
Can I convert WAV to another format instead?
Yes — the Audio Converter takes the same file and can keep it as WAV or output other formats, which is useful when a project needs uncompressed audio for editing.