Uwarp

MP3 bitrate

192 kbps is the starting point. Use 320 kbps for higher quality, or 96 kbps for a smaller file.

WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, AMR, or MP3. The first run downloads FFmpeg once in this browser.

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Convert an audio file to MP3

Convert an audio file to MP3 in your browser. No signup, pick the bitrate, and the file stays on your device.

What is an audio to MP3 converter?

An audio to MP3 converter takes a sound file and saves it as MP3. People use it to convert an audio file to MP3, turn WAV, FLAC, M4A, or OGG into MP3, or save an existing MP3 at a different bitrate. This page does that in the browser: you upload the audio, pick 96 to 320 kbps, and download an .mp3 file encoded at that bitrate.

Audio to MP3 converter features

Save a common audio file as MP3.

  • Audio to MP3

    Upload WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, AMR, or MP3 and download an .mp3 file.

  • Bitrate you choose

    Pick 96, 128, 192, 256, or 320 kbps before the file is encoded.

  • Sound only

    The MP3 holds the audio. Cover pictures are not written into the file.

  • Browser-side conversion

    The audio stays on your device. No account is required to convert a file to MP3.

How to convert audio to MP3

Three steps from an audio file to an MP3.

  1. Add the audio file

    Drop a WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, AMR, or MP3 file.

  2. Pick the bitrate

    Keep 192 kbps, or choose a higher or lower bitrate.

  3. Download the MP3

    Click Convert to MP3, then save the .mp3 file.

Tips for audio to MP3

Get a cleaner MP3 from an audio file.
  • 01

    Start at 192 kbps

    192 kbps is a practical default for music. Use 320 kbps when you want a larger, clearer file.

  • 02

    Use the original file

    WAV and FLAC still have the full recording. Encoding those to MP3 once is better than encoding an MP3 again.

  • 03

    Keep the file under 200 MB

    Larger files are rejected so the conversion can finish in the browser.

  • 04

    Match the extension

    Use WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, AMR, or MP3 so the encoder can read the file.

Great for

Reasons to save audio as MP3.

  • A player that wants MP3

    Turn WAV, FLAC, M4A, or OGG into the MP3 file most players open.

  • A smaller music file

    Pick a lower bitrate when you need a smaller MP3.

  • A new bitrate

    Save an existing MP3 again at 128, 192, or 320 kbps.

  • A private conversion

    Build the MP3 on your device when you do not want to upload the recording.

Why use this converter

A focused audio to MP3 path in the browser.

  • Free to use

    Convert audio to MP3 with no signup and no watermark on the download.

  • Private by default

    Reading the audio and writing the MP3 stay in the browser.

  • No install

    Open the page, add the file, and download. A desktop converter does not have to be installed.

  • Several audio types

    One page covers WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, AMR, and MP3.

Technical details

How this audio to MP3 conversion works.
Input
WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, AMR, WebA, M4B, or MP3, up to 200 MB.
Output
An MP3 file encoded with LAME at 96, 128, 192, 256, or 320 kbps. The starting bitrate is 192.
What is left out
Cover art and video pictures are not copied. A web address is not fetched.
Where it runs
FFmpeg encodes the MP3 locally in the browser. The file is not uploaded for conversion.

Sources & References

References for the MP3 file this converter writes.
  • “MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is an audio coding format developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg.”
    — Wikipedia — MP3

    MP3: The download is that MP3 audio, encoded at the bitrate you pick. en.wikipedia.org/wiki/MP3

  • “MPEG-1 Audio Layer III was originally defined in 1991 as one of the three possible audio codecs of the MPEG-1 standard (along with MPEG-1 Audio Layer I and MPEG-1 Audio Layer II).”
    — Wikipedia — MP3

    MPEG-1 Audio Layer III: This page encodes the uploaded audio with that MP3 codec. en.wikipedia.org/wiki/MP3

Frequently Asked Questions

Quick answers about this tool—open a question to read more.