Extend MP3

This tool makes an MP3 run longer while still sounding like one continuous track. Instead of pasting the file end to end, it finds the song's beats and section boundaries and repeats whole musical phrases from the middle, so the longer version keeps its groove and the joins don't jump.

To use it: load your MP3 (or WAV) by uploading it, set the target duration you want, and let it analyze the audio. It picks natural loop points, you preview the result, adjust if needed, and export the longer file.

This helps when a backing track or background song is shorter than the moment it has to cover. Say a walk-on or dance routine needs exactly 2:40 but the track is 2:05, or a slideshow runs longer than the music. You fill the time without the song cutting out early or restarting awkwardly.

A practical tip: extending works best when you repeat from the song's main body rather than its intro or final outro. Repeating a verse or chorus reads as natural; looping a unique ending usually doesn't, so leave the outro for the very end.

Does this change the pitch or speed? No. It doesn't time-stretch or slow the audio down. It adds length by repeating sections at the original tempo and key, so the song sounds normal, just longer. Everything runs in your browser.