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NewMastershot Studio is open: a video editor with no watermark on anything you export. Try it free

Audio converter

Convert audio to MP3, WAV, M4A, FLAC, Ogg, or an iPhone ringtone. Add as many files as you like. Free, with no upload.

Files stay on your device

Drop files to convert

See their format, then choose an output.

MP3, M4A, WAV, FLAC, and other audio, or a video with sound. You can also drag in a whole folder.

How to convert audio files online

Drop in a song, a voice memo, or a whole folder of recordings, choose MP3, WAV, M4A, FLAC, Ogg, AAC, or M4R, and download the new files. M4A, WAV, FLAC, Ogg, Opus, WEBA, AIFF, and AAC files all open, and so do videos, whose sound is saved. Everything is converted in your browser, so your files are never uploaded.

  1. Step 1

    Choose your audio
    Pick one file or many, or drop them or a folder into the converter above.

  2. Step 2

    Choose a format
    MP3, WAV, M4A, FLAC, Ogg, AAC, or an M4R ringtone.

  3. Step 3

    Download
    Save each new file, or all of them at once.

What to expect

Supported inputs
MP3, WAV, M4A, FLAC, Ogg, Opus, WEBA, AAC, and AIFF files, and the sound from any video this browser reads.
What happens
The sound is saved in the format you choose. A file already in a format the new one holds, such as AAC going into M4A, is copied as it is; anything else is re-encoded. MP3 is selected first.
Limits
Converting a compressed file to WAV or FLAC makes it bigger but doesn't bring back detail the compression removed. Firefox has no AAC encoder, so its M4A and M4R files hold MP3; Chrome, Edge, and Safari write AAC.

For one format, size, or task

The same tool, with the settings already picked.

To MP3

To WAV

To FLAC

To Ogg

Other formats

Private by design

Your video stays on your device

Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.

  • No upload
  • No signup
  • No watermark

Questions

Yes. Choose or drop as many as you like, or a folder. They're converted one after another in the format you pick, and you can download each one or all of them.

No. They're converted in your browser, on your device, so nobody else hears them.

MP3 to play anywhere. M4A for Apple Music and iPhones. WAV for an audio editor or a DAW. FLAC to keep every detail in a smaller file than WAV. Ogg for games and web pages. M4R for an iPhone ringtone.

Yes. Drop in an MP4, MOV, or any other video, and its sound is saved in the format you choose.

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