Which audio files can I convert?

This tool accepts audio files supported by the bundled ffmpeg build. The file never leaves your device, so there is no upload limit — the only ceiling is what your browser can hold in memory.

What is the difference between MP3, WAV, and OGG output?

MP3 and OGG use lossy compression and a selectable bitrate. WAV uses 16-bit PCM, so it is uncompressed and the bitrate selector does not apply.

Does converting to WAV restore lost quality?

No. WAV avoids adding lossy compression to the output, but it cannot recover detail already removed from a compressed source.

Why can the output be larger than the source?

WAV is uncompressed, and a higher MP3 or OGG bitrate can also exceed the source bitrate. Format conversion is not the same as size reduction.

Audio Converter & Compressor

LocalFree

Convert audio between MP3, WAV, and OGG and control the bitrate to shrink file size — all on your device with ffmpeg.

or drop it here

Choose an audio file to convert.

About the converter

Choose MP3, WAV, or OGG output. MP3 and OGG use the selected bitrate; WAV uses uncompressed 16-bit PCM. The converter runs locally with ffmpeg in WebAssembly.

How to use Audio Converter & Compressor

1Select one audio file and choose MP3, WAV, or OGG output.
2For MP3 or OGG, choose a bitrate from 64 to 320 kbps.
3Convert in the browser, preview the output, then download it.

Frequently asked questions

Which audio files can I convert?: This tool accepts audio files supported by the bundled ffmpeg build. The file never leaves your device, so there is no upload limit — the only ceiling is what your browser can hold in memory.
What is the difference between MP3, WAV, and OGG output?: MP3 and OGG use lossy compression and a selectable bitrate. WAV uses 16-bit PCM, so it is uncompressed and the bitrate selector does not apply.
Does converting to WAV restore lost quality?: No. WAV avoids adding lossy compression to the output, but it cannot recover detail already removed from a compressed source.
Why can the output be larger than the source?: WAV is uncompressed, and a higher MP3 or OGG bitrate can also exceed the source bitrate. Format conversion is not the same as size reduction.