Free MP3 Merger
Use Free MP3 Merger, review the result, and keep the original until the output is checked.
How to use Free MP3 Merger
- Add two or more audio files; drag the handle beside each row to put them in playback order.
- Check the list order carefully - the merge follows the list, not the file names.
- Set Bitrate (kbps) and the other conversion options for the joined output.
- Convert All and download the single merged_audio.mp3.
What Free MP3 Merger actually does to your file
Joining happens as one decode-and-encode pass, so the result is one generation lossy regardless of how many files went in, and every input must share the same sample rate and channel layout - a 44.1 kHz file mixed with a 48 kHz one fails rather than being converted for you. Convert everything at 44.1 kHz stereo first if that happens. Gap Between Files adds silence after the joined audio, not between the tracks.
Free MP3 Merger FAQ
What does Free MP3 Merger do?
Combine supported audio tracks into one file. Arrange the tracks, review the result, and download the processed audio.
Which files work with Free MP3 Merger?
This category commonly supports MP3, WAV, AAC, OGG, and M4A. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.
Can I change the order of the files before merging?
Reorder the selected files in the list before you run the merge. The output follows the order shown on the page, not the order in which you picked them.
Will my original file be changed?
No. The work is done on a copy in this tab by your browser's audio decoder and a WebAssembly build of ffmpeg, and the result arrives as a separate download, so your original is still there if you need it.
How is my file processed?
It is not uploaded. The processing is done locally by your browser's audio decoder and a WebAssembly build of ffmpeg, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Are my files uploaded to your servers?
Many EditTools pages process files in your browser, so data never leaves your device. When server processing is required, files are handled over encrypted connections and removed according to our privacy policy.