Audio to MP3 Converter

Already have an audio file? Convert M4A, WAV, WMA, FLAC, AAC or OGG to MP3.

Upload your audio files.
Choose the MP3 bitrate.
Download the converted MP3s.

Not everything that needs converting arrives as video. Voice memos come off iPhones as M4A, older Windows libraries are full of WMA, recording gear writes WAV, and archives are increasingly FLAC. This tool takes all of them to MP3 at the bitrate you choose.

It's the same encoder as the video tools, so a mixed pile of sources ends up as a consistent set of MP3s rather than a patchwork.

Coming from a lossless source

If you're converting WAV or FLAC, you have real headroom — the source holds every bit of the original, so 256 or 320 kbps produces an MP3 that is genuinely hard to distinguish from it. Coming from a lossy source such as M4A or WMA, matching the original's bitrate is the better instinct; going higher just inflates the file.

More bestmp4tomp3converter.com tools

MP4 to MP3 Extract the audio from an MP4 and save it as an MP3 — pick the quality, keep the filename, no signup. Video to MP3 Not an MP4? MOV, MKV, AVI, WebM, WMV and FLV all convert to MP3 here too. MP4 to WAV Extract a video's audio as uncompressed WAV — the format editors and DAWs expect. MP4 to M4A Keep an MP4's audio in AAC form — smaller than MP3 at the same quality, native on Apple devices.

Frequently asked questions

Which audio formats are supported?

M4A, WAV, WMA, FLAC, AAC, OGG, OPUS, AIFF, AMR and MP3 itself (useful for re-encoding to a smaller bitrate).

Can I re-encode an MP3 to make it smaller?

Yes — upload the MP3 and pick a lower bitrate. Be aware this is a second lossy pass, so only go down when size genuinely matters.

Do voice memos from my iPhone work?

Yes. iPhone voice memos are M4A files and convert directly.