Convert to FLAC

Convert audio and video files to FLAC online, for free, with nothing to install.

MP4, MOV, MKV, AVI and 42 other audio or video file formats can be converted to FLAC: drop your files above, and FLAC is already chosen as the output. Files are converted on our server and deleted 72 hours later.

What is a FLAC file?

FLAC – FLAC lossless audio. FLAC compresses audio to about half its size without losing anything: decoding gives back exactly what went in. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.

How to convert audio or video files to FLAC

  1. Click Select File, or drop your audio or video files anywhere on this page. Any of the 46 supported formats works.
  2. FLAC is already chosen as the output on this page.
  3. Click Convert, then Download when it's done.

FLAC at a glance

FLAC
LayoutA stream of sound
EditableIn audio editors
Created byXiph.Org, 2001
Best forKeeping music at full quality

Frequently asked questions

Why convert to FLAC?

FLAC compresses audio to about half its size without losing anything: decoding gives back exactly what went in. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost. Best for: Keeping music at full quality.

Which audio or video file formats can be converted to FLAC?

GIF, WEBP, 3G2, 3GP, 3GPP, AAC, AC3, AIF, AIFC, AIFF, AMR, AU, AVI, CAF, DV, DVR, FLV, M2TS, M4A, M4B, M4V, MKV, MOD, MOV, MP3, MP4, MPEG, MPG, MTS, MXF, OGA, OGG, OGV, OPUS, RM, RMVB, SWF, TS, VOB, VOC, WAV, WEBA, WEBM, WMA, WMV, DAT.

Is converting to FLAC free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my audio or video files uploaded anywhere?

These conversions run on our server, because they need ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.

Convert to FLAC from

All audio formats

Updated