WAV → MP3
WAV to MP3 converter
Drop a WAV file and get an MP3 of the same recording at a fraction of the size. The encoding runs in this tab, so the file never leaves your device.
The WAV is read as it is and encoded to MP3; the original file stays untouched. 192 kbps suits most recordings, 320 kbps suits music.
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At a glance
- Price
- No charge
- Account
- None needed
- Upload
- None — the WAV is read and encoded in your browser tab, nothing is sent to a server
- Input
- WAV
- Output
- MP3 at 128, 192 or 320 kbps
- File size
- 1 GB per file, 5 files per batch
- Works on
- Recent Chrome, Edge, Firefox or Safari (Safari 26+ for audio)
How to convert WAV to MP3
Add the WAV
Drop a WAV file on the box above, or up to five at once. A batch runs one file after another.
Choose the bitrate
128 kbps gives the smallest file, 192 kbps is the default for speech and most music, and 320 kbps keeps the most detail.
Download the MP3
The MP3 appears with its size, so you can compare it with the WAV, and plays right there. Download it when it sounds right.
Why a WAV shrinks so much
A WAV file stores every sample uncompressed. CD-quality audio (44.1 kHz, 16-bit, stereo) runs at 1,411 kbps, about 10.6 MB for every minute. The same minute as an MP3 takes about 1 MB at 128 kbps, 1.4 MB at 192 kbps and 2.4 MB at 320 kbps. Other WAV files, such as mono speech or higher sample rates, scale differently.
The saving has a price: MP3 discards detail the ear is least likely to notice, and that cannot be brought back. Keep the WAV if you will edit the recording again, and use the MP3 for sharing and playback. A WAV that holds a codec other than plain PCM may not open in every browser; the tool then reports an error rather than writing a broken file.
WAV to MP3 questions
How much smaller will the MP3 be?
For CD-quality stereo (1,411 kbps), an MP3 at 192 kbps is about a seventh of the size, and one at 320 kbps is a little under a quarter. Mono or low sample-rate WAVs shrink less.
Which bitrate should I choose for a WAV?
192 kbps is the default and is a safe pick for speech, podcasts and most music. Choose 320 kbps for music you want to keep, or 128 kbps when the file has to be as small as possible.
Is my WAV file uploaded anywhere?
No. The file is read and encoded by your browser in this tab, and nothing is stored. The MP3 encoder is a small script that loads from this site the first time you convert; the audio itself is never sent.
Why does my WAV not open?
Most WAV files hold plain PCM, which browsers decode. A WAV that wraps another codec, or a damaged file, can fail with a read error. Re-export it as PCM WAV from your audio editor and try again.
How large can the WAV be?
Up to 1 GB per file, which is about 94 minutes of CD-quality stereo, and up to 5 files in one batch.