Make Audio Longer

This tool lengthens an audio file to a target duration. Instead of looping the whole track back to the start or fading it out, Audjust finds beat and section boundaries inside the song and repeats them from the inside, so the longer version still plays as one continuous piece. It runs in your browser, it's free, and there's no signup or install.

To use it: upload your file (MP3, WAV, and other common formats work). Let it analyze the track, then type the length you want or drag the timeline to stretch the audio out. Preview it, and when the join sounds clean, export the longer file.

This helps when a track is too short for what it has to cover. If a 90-second song needs to run under a three-minute slideshow or reel, you can pad it to the exact runtime instead of recutting your video to fit. It also works for stretching a backing loop or instrumental to fill a full performance or presentation.

One thing to know: the result keeps the song's real tempo and pitch. This isn't time-stretching that slows everything down. It adds more of the song by repeating internal sections, so the music stays at its original speed and key.

A common question is whether it just glues a copy on the end. It doesn't. It picks repeat points on the beat and inside matching sections, so an extended track sounds continuous instead of restarting halfway through.