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WAV to MP3 Converter

Convert WAV files to MP3 in your browser — nothing is uploaded.

MP3, WAV, FLAC, M4A, M4B, MP4, AAC, OGA or WEBA, one or many. Drop them here or paste with ⌘V / Ctrl+V. Choose what each becomes on its row.

Runs on your device. Files are read and converted in your browser and aren't uploaded.

WAV

  • Lossless
  • Uncompressed
  • Made for editing

Sound stored exactly as it was recorded, with no compression. WAV files are big — about 10 MB a minute at CD quality — but every editor, DAW and computer opens them, so they're the standard for recording, editing and handing over masters.

MP3

  • Lossy
  • Plays everywhere
  • Small files

The audio format almost everything plays. MP3 makes small files by leaving out detail most ears won't miss, which makes it the safe choice for music, podcasts and voice notes you want to share, upload or keep on a phone.

Learn more about converting WAV to MP3

When you'd do this

You've recorded or exported a WAV — a voice-over, a podcast take, a mix from your editor — and it's too big to email, upload or keep on your phone. An MP3 is a fraction of the size and plays on anything.

What to expect

A 4-minute stereo WAV at CD quality is about 40 MB. As an MP3 at the default 192 kbps it comes out at about 5.5 MB — roughly a seventh of the size. At 320 kbps it's about 9.2 MB; at 128 kbps, about 3.7 MB.

Recommended settings

Keep the default 192 kbps for music and mixed content: most people can't tell it from the WAV. Drop to 128 kbps for speech-only recordings, or go to 320 kbps for a master you'll listen to closely — it's the most MP3 can hold.

Where it plays

Everywhere: every phone, computer, browser, car stereo and media player, and every podcast host and upload form that takes audio.

Good to know

  • MP3 is lossy: the WAV keeps detail the MP3 leaves out, so keep the WAV if you'll edit it again.
  • A WAV can be up to 2 GB and 4 hours, and an MP3 from a WAV up to 4 hours — the encoder reads straight from the file.
  • Sound above 48 kHz (a 96 kHz studio WAV, say) is resampled to 48 kHz, the most MP3 can store.
  • Compressed WAVs (ADPCM and the like) can't be read; ordinary PCM, floating-point, A-law and µ-law WAVs can.

How to do it

  1. Choose your WAV files, or drop them on the page — as many as you like.
  2. Each is set to MP3. Change one on its own row if you like, and the MP3 bitrate and the channels in Settings.
  3. Convert all, then download each MP3, or all of them in one .zip.

Questions

What bitrate should I use to convert WAV to MP3?
192 kbps suits most music and is the default; 128 kbps is plenty for speech; 320 kbps is the highest quality MP3 offers.
Can I convert several WAV files to MP3 at once?
Yes. Add as many as you like, press Convert all, then download each MP3 or all of them in one .zip.
Are my WAV files uploaded?
No. They're read and converted in your browser, on your device, and never leave it.
Will the MP3 have a gap at the start or end?
No. The MP3s made here carry the gapless information players use to skip the encoder's padding.
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