Audio Joiner
Join recordings in the order you choose and download one MP3.
Drop your file hereTap to choose a file
or click to browse, or paste from the clipboard
MP3, WAV, M4A, FLAC, OGG, OPUS
Max file size: 25 MiB
Arrange your recordings
Add two to eight audio files. Move tracks up or down to set the playback order.
Trim each track
Enter start and end times in seconds. Leave the end blank to include the remainder of the track.
Preview and download
Listen to the sequence on your device, then export and play one 192 kbps stereo MP3.
How to join audio files into one MP3
- 1
Add two to eight audio recordings.
- 2
Move each track into playback order and enter any start and end times in seconds.
- 3
Choose Preview sequence to hear your selection, then Join and export MP3.
- 4
Listen to the completed audio or download your joined MP3.
What people use this tool for
- Arrange interview clips in speaking order.
- Join several voice memos into a single recording.
- Trim an introduction and an outro around a short audio segment.
Frequently Asked Questions
Which files can I join?
Choose MP3, PCM WAV, AAC or Apple Lossless M4A, FLAC, or Ogg Vorbis/Opus audio. Ogg Opus files with the .opus extension are supported. If a recording contains multiple audio tracks, the first is used.
How do I trim a track before joining it?
Enter the start and end positions in seconds. For example, start at 2 and end at 5 to include a three-second section. Trims stay attached to the recording when you move it.
What does the MP3 contain?
The selected segments play consecutively in list order. Output is a stereo MP3 at 48 kHz and 192 kbps, without embedded source artwork or chapters.
What limits apply?
Join two to eight recordings, up to 25 MiB per file and 100 MiB combined. Each source can be up to 30 minutes long, and the selected segments can total up to ten minutes.
When are my recordings uploaded?
Choosing audio and previewing the sequence use local files. Join and export MP3 uploads the recordings for processing. Save the resulting MP3 before its temporary download expires.
Can I export a file my browser cannot preview?
Yes, if the server supports the recording. Sequence preview depends on the codecs your browser can play. After conversion, you can play the completed MP3 in the output player.