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Audio to FLAC Converter

Convert MP3, WAV, M4A, MP4 and other audio files — or the sound of a video — to FLAC in your browser — nothing is uploaded.

MP3, WAV, FLAC, M4A, M4B, MP4, AAC, OGA or WEBA, one or many. Drop them here or paste with ⌘V / Ctrl+V. Choose what each becomes on its row.

Runs on your device. Files are read and converted in your browser and aren't uploaded.

FLAC

  • Lossless
  • Compressed
  • Music archives

Lossless audio in about half the space of a WAV. FLAC keeps every sample but packs it tightly, which makes it the favourite for music collections and archives. Most players and Android phones play it; Apple Music and iTunes don't.

Learn more about converting audio to FLAC

When you'd do this

You're building a lossless archive or library and want your WAVs (or anything else) in one compact, lossless format.

What to expect

A minute of CD-quality sound is about 10 MB as a WAV and at most about 7.6 MB as a FLAC — often closer to half the WAV.

Recommended settings

Match the source: 24-bit for 24-bit studio files, 16-bit (the default) for everything else.

Where it plays

Android, Windows, VLC, foobar2000 and most music players; on iPhone in Files and VLC. Not iTunes or Apple Music.

Good to know

  • A FLAC made here can be up to 60 minutes long.
  • Only a lossless source (WAV, FLAC) gives a truly lossless FLAC; from MP3 or AAC it keeps their sound, losses and all.

How to do it

  1. Choose your audio files, or drop them on the page — any mix of formats.
  2. Each is set to FLAC. Change one on its own row if you like, and the bit depth and the channels in Settings.
  3. Convert all, then download each FLAC, or all of them in one .zip.

Questions

Is FLAC lossless?
Yes: it gives back exactly the samples that went in.
Can I convert MP3 to FLAC to get better quality?
No — the FLAC keeps the MP3's sound, losses and all.
Can I convert many files at once?
Yes, and download them together as a .zip.
Contact usAudio to FLAC Converter · OpsDrawer