Free tool

WAV to MP3 converter a tenth of the size, plays everywhere.

Drop WAV files and download MP3s at the bitrate you choose. About a tenth of the size, plays on every phone and player. Several at once.

WAV to MP3 converter at a glance

content.win encodes WAV to MP3 with no queue and no daily cap, a two-hour recording included.

Works with
WAV and AIFF files at any sample rate, 16, 24 or 32-bit, stereo or mono.
Comes back as
MP3, the full length, named after the original.
Runs
In your browser.
Limits
No daily limit and no cap on how many files.
Price
Free. No account, no watermark.

How to convert WAV to MP3

  1. Drop the WAV files in. Several at once is fine.
  2. Pick a bitrate. 128 kbps for speech, 192 for music, 320 when every detail matters. Mono halves the size of a spoken recording.
  3. Download the MP3 files. Each has its own player and Download button; one button takes them all.

Why people convert WAV to MP3

Sharing and sending
A 50 MB WAV becomes a 5 MB MP3 that goes through email, WhatsApp and any messaging app.
Phones and players
Every phone, car and player takes MP3; many cannot play WAV at all.
Podcasts and voice notes
128 kbps mono is the podcast standard: clear speech at about 1 MB a minute.
Music
192 kbps is transparent for most listeners; 320 kbps for a master you want to keep small.

About quality

  • MP3 removes what the ear cannot hear. At 192 kbps and above almost nobody can tell it from the WAV; at 320 kbps nobody in ordinary listening.
  • Keep the WAV if you will edit the sound again; export MP3 from the finished version.

Questions people ask

Which bitrate should I pick?

128 kbps for speech, 192 kbps for music, 320 kbps for a master. Mono halves the size for anything spoken.

How big will the MP3 be?

About 1 MB per minute at 128 kbps, 1.4 MB at 192, 2.3 MB at 320. Mono halves those.

Does it handle 24-bit or 96 kHz WAV?

Yes. Any WAV the browser can read, including 24-bit and high sample rates, comes out as a standard MP3.

Can I convert several files at once?

Yes. Drop them all; each comes back named after the original, and one button downloads the lot.