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Add the files
Drop several audio files on the box above, or tap it to pick them. Add more the same way.
Merge Audio Files for Free
Merge audio files in the order you choose, up to 20 at once, with nothing uploaded.
Last updated
- Free, no sign-up
- Never leaves your device
- Works on your phone
How do I check the merged audio before I save it?
To merge audio files for free, add them above, put them in order, pick WAV or MP3, and select Merge. The files are joined in your browser, with no upload. Play the joined file on this page before you download it.
Listen at each join
Skip to where one file ends and the next begins. If a join is too tight, add a pause and merge again.
Hear noise before you publish
If the quiet parts of the merged file carry a hum or room noise, the page says so and offers a free noise removal preview.
Why merge audio files?
Recordings arrive in pieces: a phone that stopped, a show taped in segments, voice memos made on different days. Merging audio files turns them into one.
A podcast recorded in parts
Intro, interview, and outro become one episode file ready to upload.
Voice memos that belong together
A lecture or interview split across several memos plays as one recording.
A playlist or mix as one file
Songs for a class, a run, or a party become a single file with a pause between tracks.
Pieces recorded in different rooms
Clean each room’s noise so the joins do not jump from quiet to loud.
Remove background noise from audioWhat does the merged file sound like?
When you merge audio files here, each one is decoded and laid end to end. The result follows the best of the inputs, so nothing is downgraded.
| If the files… | The merged file… |
|---|---|
| Have different sample rates | Uses the highest one; the others are resampled to match |
| Mix mono and stereo | Is stereo; mono files play in both ears |
| Are MP3, M4A, WAV, or others mixed together | Is one WAV, or one MP3 at 192 kbps |
| Add up to more than 60 minutes | Cannot be built in the browser |
Why use EraseNoise as your audio joiner
It joins your files in order and hands back one file, with nothing added.
Nothing is uploaded
Each file is read and joined by your browser. Private interviews and memos never reach a server.
Mixed formats are fine
When you merge audio files here, an MP3 intro, an M4A interview, and a WAV outro join into one file without converting them first.
Order and pauses you choose
Move files up or down, and add a short pause between them so the joins breathe.
Free with no account
No sign-up, no watermark, and no daily cap.
Why is it faster than an online audio joiner?
When you merge audio files here, there is no upload of each file and no download of the result. The join happens on your device.
No upload for every file
Five files do not have to travel to a server one by one.
No timeline to build
You do not need an editor and a project to put files back to back.
Works on a phone
To merge audio files on a phone, pick several memos from Files in Safari or Chrome and save the merged file back.
Which audio files can I merge?
Merge audio files up to 2 GB each, up to 20 files and 60 minutes in total.
MP3, WAV, M4A, AAC, OGG, Opus, or FLAC
Mix formats freely. Each file is decoded before joining.
Up to 20 files and 60 minutes
The merged file is built in memory, which keeps the total to an hour.
Video files
Take the sound out first, then merge the audio files.
Files you are allowed to use
This page joins files on your device. It does not download from websites.
How to merge audio files
- 2
Set the order and pause
Use the arrows to reorder, choose WAV or MP3, and pick a pause between files if you want one.
- 3
Merge and download
Select Merge, play the joined file, and download it.
Who merges audio files?
A podcaster assembling an episode
Merge the intro, the two halves of an interview, and the outro into one WAV, then normalize it to -16 LUFS.
A student with a split lecture
Three voice memos from one class merge into a single MP3 to review before the exam.
A teacher building a listening test
Merge short clips with a two-second pause between them so students know when the next one starts.
What to do after you merge audio files
After you merge audio files, the recording usually needs one more step.
| Job | Use |
|---|---|
| Noise changes from one part to the next | Remove background noise from audio |
| Parts are louder or quieter than others | Normalize audio (free) |
| Long pauses inside the recording | Remove silence from audio (free) |
| Need WAV from an MP3 first | Convert MP3 to WAV (free) |
| The pieces are videos | Convert video to MP3 (free) |
Are my files uploaded?
No. To merge audio files, EraseNoise decodes and joins them in your browser. Nothing is sent to a server or stored. Refreshing the page clears the result, so download the merged file before you leave.
Frequently asked questions
How do I merge audio files for free?
Open this page, add the files, put them in order, pick WAV or MP3, and select Merge. Your browser does the work, so it is free, needs no account, and adds no watermark.
Can I merge MP3 and M4A files together?
Yes. Formats can be mixed. Each file is decoded first, then all of them are joined into one WAV or MP3.
Can I add a pause between the files?
Yes. Choose 0.5, 1, or 2 seconds of silence between files, or none for back-to-back joins.
Are my files uploaded?
No. The files are decoded and joined in your browser. Nothing is sent to EraseNoise or anyone else.
How many files can I merge?
Up to 20 files, with up to 60 minutes in total. The merged file is built in memory, which sets that limit.
Does merging lower the quality?
WAV keeps every file as decoded. MP3 is encoded once at 192 kbps. Files with a lower sample rate are resampled up to match the highest one, which does not add or remove detail.
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Merge audio files on this device
Add your files, set the order, and play the result before you save it. Nothing leaves your phone or computer.
Add audio files