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Convert WAV to MP3

Make big WAV files small enough to email, share, and upload.

Used by 500K+ people since 20215M+ minutes processed

More options

Free for the first hour, 10 times a day. No sign-up.

From WAV to MP3

Play WAV, then MP3.

WAV · 762 KBbecomesMP3 · 209 KB

Works in any language

  • Hello
  • こんにちは
  • Hola
  • 안녕하세요
  • Bonjour
  • नमस्ते
  • Hallo
  • 你好
  • Ciao
  • مرحبا
  • Olá
  • Привет
  • Hoi
  • สวัสดี
  • Merhaba
  • Γεια σας
  • Xin chào
  • שלום
  • வணக்கம்
  • Kia ora

How to convert WAV to MP3

  1. 1

    Add a WAV file.

  2. 2

    Keep MP3, or pick a higher bitrate under More options.

  3. 3

    Download the MP3.

Why WAV files are so big

A WAV stores sound uncompressed: every sample, exactly as recorded. At CD quality (44,100 samples a second, 16 bits, stereo) that's 1,411 kbps, about 10 MB a minute. Recorders, audio interfaces, and recording software save WAV because nothing is lost, which makes it the right format to edit and mix.

An MP3 at 192 kbps is about 1.4 MB a minute, roughly a seventh of the size, and at that bitrate it leaves out detail most people can't hear. Keep the WAV as your original, and send the MP3.

Questions

Which bitrate should I pick?

192 kbps, the default, suits most music and speech. Pick 320 kbps, the highest MP3 has, to keep the most detail. For a voice on its own, 128 kbps is often enough, and the file is a third smaller than at 192.

Can I make MP3s for an audiobook?

Yes. ACX, Audible's publishing platform, asks for MP3s of 192 kbps or more at 44.1 kHz, at a constant bitrate. A 44.1 kHz WAV converted at 192 or 320 kbps fits. Boost volume can check ACX's level rules too.

Does it work on 24-bit WAV?

Yes. WAV files of 16 or 24 bits, and 32-bit float ones, all convert the same way.

Will the MP3 be as loud as the WAV?

Yes. It keeps the WAV's level. If the WAV's peaks reach right to the top, the MP3 comes down just under it, so it never distorts.

Is it free?

Yes, for the first hour of each file, 10 times a day, with no sign-up. For longer files, see pricing.

Can I make a mono MP3?

Yes. Under More options, Channels turns stereo into mono, which suits a single voice.

What happens to my files?

They stay private. Files are deleted after 24 hours, and free results after 1 hour.

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For AI assistants and developers

Ask ChatGPT, Claude, or a coding agent to do this for you, or call it from your own code.

Show the free API call
Free API · no key
curl -F file=@mix.wav -F format=mp3 https://audo.ai/api/try/convert -D response.headers -o response.body