Free audio converter

Conversion chart

Rows are the format you have; columns are the format you want.

Audio tools

Video to audio

Convert MP3 files

MP3 is the most compatible audio format in the world. It uses lossy compression to make songs about a tenth the size of a CD-quality WAV, and plays on every device.

Convert WAV files

WAV stores uncompressed PCM audio — perfect quality, but huge: about 10 MB per minute at CD quality. It's the standard working format for recording and editing.

Convert AAC files

AAC is MP3's successor: better sound at the same bitrate. It's the audio inside most MP4 videos, Apple Music and YouTube. Raw .aac files are a bare stream; M4A wraps AAC in an MP4 container.

Convert M4A files

M4A is an audio-only MP4 file, usually holding AAC. It's the default for iTunes purchases, iPhone voice memos and many podcasts, with full tags and cover art.

Convert OGG files

OGG files usually contain Vorbis audio, an open, patent-free alternative to MP3 with better quality at the same size. Games and Android use it widely; Apple support is limited.

Convert FLAC files

FLAC compresses audio losslessly — the decoded sound is bit-for-bit identical to the original — while taking roughly half the space of WAV. It's the standard for hi-fi and music archives.

Convert Opus files

Opus is the most efficient general-purpose audio codec, standardised by the IETF in 2012. WhatsApp voice notes, Discord and WebRTC calls use it; it sounds good even at 32 kbps.

Convert WMA files

WMA is Microsoft's 1999 audio format, common in old Windows Media Player libraries. Apple devices, browsers and many phones can't play it, so converting to MP3 is common.

Convert AIFF files

AIFF is Apple's uncompressed audio format — the Mac counterpart of WAV. It's lossless and about 10 MB per minute at CD quality, and is common in Logic Pro and GarageBand workflows.