Put any audio files in order and join them into one track - back to back, with a pause, or blended with a crossfade. Only need one format? Try Merge MP3 or Merge WAV.
Still having trouble? Please contact us and we'll be happy to help!
Paste them into a YouTube description or podcast show notes - YouTube turns them into chapters.
Making an audiobook? Name the chapters 01, 02, 03... and press A-Z - the list sorts itself in the right order, even past chapter 9.
Chapters back to back, sorted A-Z, saved as M4A or MP3. The track start times become your chapter list.
Intro, segments and outro with a short gap, loudness evened out so nobody shouts or whispers.
Songs blended with 3 to 5 second crossfades for a party or workout mix.
Several recordings of one talk or lecture joined into a single file, silence trimmed.
Need a part of a song first? Cut it with the MP3 Cutter. Got the sound inside a video? Video to MP3 pulls it out.
| Join | What you hear | Best for |
|---|---|---|
| Back to back | The next track starts the moment the last one ends | Audiobooks, live albums, split recordings |
| Silent gap | A pause of 0.5 to 10 seconds between tracks | Podcasts, language lessons, playlists |
| Crossfade | The end of one track fades into the start of the next | DJ mixes, party and workout playlists |
Crossfades use equal-power curves, so the volume stays steady through the blend instead of dipping in the middle.
WAV and FLAC are lossless - the merged file sounds exactly like your tracks.
MP3, M4A and OGG are encoded once more. With Match, the bitrate follows your best track, so a set of 192 kbps MP3s stays 192 kbps and nobody will hear a difference.
Mixing formats and sample rates is fine - everything is converted to one rate (44.1 or 48 kHz) with a clean resampler before joining, so there are no clicks at the seams.
MP3 and WAV merges happen right in your browser, and so does M4A in Chrome, Edge and Safari on Windows and Mac.
Only FLAC and OGG output, and files your browser cannot read (such as WMA), are merged on our server with FFmpeg. Those uploads are deleted right after merging and the result once you download it.
Drop the files into the box, put them in order and press Merge. The merged track downloads right away.
Yes. MP3, WAV, M4A, FLAC, OGG and Opus can be mixed in one merge. Everything is converted to the same sample rate first, so the joins are clean.
Pick Silent gap and set the length from 0.5 to 10 seconds. The same pause goes between every pair of tracks.
Pick Crossfade and choose 2 to 5 seconds. Turn on Even out loudness so a quiet song does not suddenly drop in volume.
Not as WAV or FLAC. As MP3 or M4A it is encoded once more; with Match the bitrate follows your best track, so the difference is very hard to hear.
Not for MP3 and WAV - they are merged in your browser. FLAC and OGG output, and files your browser cannot read, are merged on our server and deleted right after.
Up to 50 in your browser (memory is the only limit), or 20 files and 300 MB in total when our server does the work.
Yes. After merging, Track start times lists when each track begins. Copy them into a YouTube description and they turn into chapters.