Convert audio to MP3 online

Make an MP3 from one audio file for sharing or playback. Choose a bitrate, preview the output, and download it; the file is processed in your browser.

Create an MP3 file

Audio processed on your device

Audio is converted in your browser · The original file stays unchanged

Or drag and drop an audio file here

One WAV, OGG/OGA, FLAC, M4A, AAC, OPUS or MP3 file · up to 100 MB

Checking MP3 encoding on this device…

How to convert audio to MP3

01

Choose a source file

Choose or drop one file up to 100 MB. The tool checks for an audio track before enabling conversion.

Choose an MP3 bitrate for your task

128 kb/s

Use a smaller file for sharing or speech. Preview the result if the source contains detailed music.

192 kb/s

The default starting point for general music and audio; compare size and listen before sharing.

320 kb/s

Choose a higher target bitrate if a larger file is acceptable. It cannot turn a lossy source back into the original.

If the file cannot be read or exported

An extension does not guarantee decoding
WAV, OGG/OGA, FLAC, M4A, AAC, OPUS and MP3 can contain different codecs. Decoding depends on the browser/device; WMA, AIFF and AMR are unavailable here.
No MP3 output
Check for an audio track, try another WAV/MP3 file or browser, keep the tab open, and try a smaller file if memory is limited.

Data handling and output quality

This page reads and re-encodes audio with Mediabunny in your browser; its code does not send file contents to an KitoTool API. Output uses stereo 44.1 kHz at your selected bitrate. MP3 is lossy: increasing bitrate or re-encoding an MP3 cannot restore lost detail. Large files depend on device memory and processing power.

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