Add a song
Upload an MP3, WAV or M4A up to 5 minutes long, or pick a track from My Music. Uploaded files are processed in your browser and never leave your device.
Free · no sign-up
Song Looper: make any song longer, seamlessly
Drop in a track and pick how long it should run. Song Looper finds bars that line up on the beat and repeats them, so the longer version flows like the original instead of restarting with an audible jump.
Choose a local fileMP3, WAV, M4A · processed in your browser, never uploaded
Up to 10:00
Everything happens in your browser: we find the beats and sections, then re-join parts of the original. Nothing is uploaded and no credits are used.
How it works
Three steps to a longer song
Choose the length
Type the duration you need, from 10 seconds up to 10 minutes. Song Looper analyses the tempo and suggests several arrangements, each rated for how smooth its cuts are.
Preview and export
Listen to the seams of each version, keep the one that sounds right and download it as an MP3.
What people use it for
When a song is just too short
Video and slideshow soundtracks
Stretch a track to cover the whole edit instead of looping it by hand in the timeline.
Workouts, dance and routines
Make a practice or performance track last exactly as long as the routine.
Study, sleep and focus
Turn a favourite three-minute track into a longer listening session without the jarring restart.
Social posts and stories
Get a version long enough for the clip you are posting, then trim it in your editor.
Looking for the Eternal Jukebox?
An alternative that exports a finished file
If you used the Eternal Jukebox or Infinite Jukebox to keep a song playing, Song Looper works on the same idea: it jumps between moments in the song that match on the beat. The difference is that you set a length and download a finished MP3 you can use anywhere, instead of listening in a browser tab.
Looper or AI?
Repeat the song, or write new music
Song Looper (free)
Reuses bars that are already in the song. Best when you only need it longer and want it to sound exactly like the original.
AI Music Extender
Writes brand-new sections that continue the song, so it sounds like one full-length version rather than a repeat. Uses credits.
Try the AI Music ExtenderBetter results
Tips for a seamless loop
Steady tempo works best
Songs with a clear, steady beat give the most natural cuts. Rubato ballads and free-time intros are harder to join.
Repeated sections help
A chorus or riff that comes back gives Song Looper more places to cut. Through-composed pieces may end with a fade instead.
Check every seam
Each suggestion lets you preview just the cut points. If a join sounds off, try the next version or a slightly different length.
Song Looper FAQ
Is Song Looper free?+
Yes. Looping a file you upload is free, needs no account and uses no credits.
Is my file uploaded anywhere?+
No. A file you add from your device is decoded and processed in your browser. Nothing is sent to our servers unless you choose to continue with the AI Music Extender.
How long can the song and the result be?+
The source can be up to 5 minutes (3 minutes on low-memory devices). The result can be from 10 seconds up to 10 minutes, or up to 5 minutes on phones.
What formats can I use?+
MP3, WAV and M4A files up to 50 MB. The longer version downloads as an MP3.
Will it sound like the song is restarting?+
Song Looper cuts on matching beats and crossfades each join, and it rates every suggestion so you can pick the smoothest one. Songs with an unsteady tempo may still have noticeable joins.
Can I loop a song from My Music?+
Yes. Sign in and pick a track from My Music. Library tracks follow the same rules as downloading them, so some plans may need an upgrade first.
What if I want new music instead of a repeat?+
Use the AI Music Extender. It writes new sections that continue your song in the same style.