Join MP3 and audio files into one
Combine several MP3, M4A, WAV or OGG files into a single track, in the order you choose, without uploading them.
Drop the audio files to join
or drop them here, or paste. Up to 500 MB per file.
Runs in your browser. Your files are not uploaded.
Formats: the format list shows only what this browser can encode. MP3 and FLAC use an encoder that downloads the first time you choose them. M4A (AAC) is not available in every Firefox version.
Memory: audio is decoded in full, about 23 MB per minute of 48 kHz stereo, so long recordings can be slow on phones. Files that would need more than about 1 GB once decoded (about 45 minutes of 48 kHz stereo, or 90 of mono) are refused before decoding.
How to use Join MP3 and audio files into one
Drop two or more audio files on the page.
Move the files up or down until they are in the order you want.
Pick the output format, such as MP3 or M4A.
Select Apply, then download the joined track.
Questions
No. Everything runs in your browser and the file never leaves your device.
Yes. Each file is decoded, resampled to the first file's sample rate and joined, then encoded once in the format you choose.
No. The files are joined back to back with no silence added.
As many as fit in memory: the joined audio is held decoded, so very long results are refused before they start.
Related tools
- Audio cutter: cut MP3 and make ringtonesSelect part of a recording on the waveform and keep it, or cut it out.
- Ringtone makerPick up to 40 seconds of a song, add a fade, and save an iPhone ringtone (M4R) or an Android ringtone (MP3).
- Split audioSplit a recording into parts of equal length or at the times you choose.
- Audio joinerJoin several audio files into one, in the order you choose.