Audio joiner
Join several audio files into one, in the order you choose.
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 Audio joiner
Drop two or more audio files.
Use the arrows to put them in the order you want, or remove one with the X.
Pick the output format.
Select Apply, then download the joined file.
Questions
No. Everything runs in your browser and the file never leaves your device.
Yes. Each file is decoded, and files with a different sample rate are resampled to the first file's rate before they are joined.
Joining needs at least two files; the button reads Add at least two files until then.
Each file can be up to 500 MB, and the combined decoded audio must fit in 1 GB of memory.
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.
- Loop audioRepeat a recording a number of times in one file.