Support: Audio Converter

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Common questions

Which MP3 quality should I choose?

192 kbps sounds the same as the original to most listeners and is a good default for music. Choose 320 kbps for the best quality MP3 can give, or 128 kbps for speech, podcasts and the smallest files. As a guide, a minute of stereo audio takes about 1 MB at 128 kbps, 1.4 MB at 192 kbps and 2.4 MB at 320 kbps.

Does converting audio lose quality?

Saving as WAV loses nothing, so it is the choice for editing. MP3 and OGG make files much smaller by leaving out detail that is hard to hear; at 192 kbps and above most people cannot tell the difference. Converting a file that is already MP3 or M4A to MP3 again cannot bring back what was lost, so start from the best copy you have.

Why is my WAV file so much bigger than the MP3?

WAV stores every sample without compression. CD-quality stereo WAV takes about 10.6 MB per minute, while a 192 kbps MP3 of the same audio takes about 1.4 MB, roughly seven times less.

Can I convert an iPhone voice memo?

Yes. Voice Memos saves recordings as M4A files. Save the memo to the Files app, open this page, choose the file and save it as MP3 or WAV.

Can I convert WhatsApp voice messages?

Voice messages saved from WhatsApp usually end in .opus or .ogg. Chrome, Edge and Firefox open them, and so does Safari from version 18.4. Choose the file and save it as MP3 to play it anywhere.

Are song titles, artist names and album art kept?

No. The converter saves the sound only, so details such as title, artist and cover picture are not copied into the new file. Most music apps let you add them again.

Is the sample rate changed?

No, the original sample rate and stereo or mono are kept. The one exception is MP3, which goes up to 48 kHz: higher-rate files, such as 96 kHz studio recordings, are saved as MP3 at 48 or 44.1 kHz.

Why will a file not open?

The file may be damaged, or protected against copying, as songs downloaded from streaming services are. Some formats also depend on the browser: older versions of Safari cannot open OGG, for example. Try another browser if a file will not open.

Are my files uploaded?

No. Your browser does the conversion on your own device, so your audio is never sent to us or anyone else. The MP3 and OGG encoders are loaded from this site the first time you use them.

Is it free?

Yes, completely free, with no sign-up, no watermark and no limit on length or number of files.