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Split FLAC Files Online

Cut a FLAC recording or album rip into separate FLAC files in your browser.

Drop your audio file here

or choose one from your device

  • MP3
  • WAV
  • M4A
  • AAC
  • FLAC
  • OGG
  • OPUS
  • WEBM

Up to 100 MB. Your audio stays on your device.

You place the cuts while you listen

No file at hand?

How do you want to split? You can also decide after the file is open.

Play the file and add a cut wherever you want one, on the waveform. Choose your file above to start.

How do I split a FLAC file?

Open your FLAC file on this page, mark where each track should start, and press Download. SplitMP3 copies the FLAC audio between your cuts into new FLAC files and saves them as one ZIP.

  1. Choose your FLAC file. It opens in your browser and is not uploaded.
  2. Click the waveform to place cuts, paste track start times, or pick equal parts or a fixed length.
  3. Check the list of parts, rename them if you like, then download them one by one or as a ZIP.

How do I split a whole-album FLAC into tracks?

An album ripped as one big FLAC usually comes with a .cue file that lists where each track starts. SplitMP3 does not read cue files, but their start times are all you need. Open the cue file in any text editor, find the INDEX 01 line of each track, and type the times into the Timestamps tab with the track titles:

00:00 First track
04:12 Second track
08:47 Third track

A cue sheet writes the last number of each time as frames of 1/75 of a second. Drop it, or use the minutes and seconds only: a cut can only fall on a FLAC frame, which usually holds 4,096 samples (about 93 milliseconds at 44.1 kHz), so the rounding is smaller than the step the file allows anyway. Each part is named after its title and kept as a FLAC file.

The limit is file size: 100 MB on desktop browsers and 50 MB on phones and tablets. A FLAC at CD quality is roughly 5 to 6 MB per minute, so a full album rip is usually larger than the limit; single long tracks, live recordings and podcasts normally fit. For the same job on smaller files, see split MP3 by timestamps.

What happens to the sound and the tags?

FLAC stores the samples of the recording in a compressed form that is decoded back to the same samples. SplitMP3 does not decode or re-encode anything: it copies the FLAC frames between your cuts into new FLAC files.

  • Cuts snap to the nearest FLAC frame, usually 4,096 samples or about 93 milliseconds at 44.1 kHz.
  • Tags (Vorbis comments) and embedded cover art are not copied into the parts.
  • The file is read by your browser through the File API; SplitMP3 has no server that receives audio.

Frequently asked questions

Does SplitMP3 read CUE sheets?

No. Open the cue file in a text editor, copy the start time of each track into the Timestamps tab and add the titles. It takes a minute for an album, and you see the resulting list of tracks before anything is saved.

Is splitting a FLAC file the same as converting it?

No. Nothing is converted. The parts are FLAC files made from the original FLAC frames, with the same sample rate, bit depth and channels. If you need MP3 or another format, you need a converter, which SplitMP3 is not.

How precise are the cuts in a FLAC file?

A cut lands on the nearest FLAC frame boundary. With the usual block size of 4,096 samples that is about 93 milliseconds at 44.1 kHz, which is coarser than MP3 and finer than most track gaps. Files made with smaller blocks cut more finely.

Why is my FLAC file too large to open?

The limit is 100 MB on desktop browsers and 50 MB on phones and tablets. A CD-quality FLAC uses roughly 5 to 6 MB per minute, so the limit is reached after about 17 to 20 minutes. The page tells you before anything is processed.

Can I split a FLAC file on my phone?

Yes, for files up to 50 MB, in current versions of Chrome on Android and Safari on iPhone. Large files are slow on older phones.

Other ways to split

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