Why merge audio files?
Sometimes a recording comes in pieces: several WhatsApp voice messages, the chapters of an audiobook, the parts of an interview or the takes from a rehearsal. Merging them into one file makes them easier to listen to, send or upload to a platform.
Add your clips, order them with the arrows and choose how they’re joined. “Silence between clips” leaves a pause of up to five seconds between each one, handy for chapters or interview questions. “Crossfade” blends the end of each clip into the start of the next for up to ten seconds, the way a DJ moves from one song to the next. If you choose neither, they’re joined back to back with no gap.
You can mix different formats (for example, an MP3 with an M4A and a WAV) and mono files with stereo ones: everything is converted to the same sample rate, and if any file is stereo, the result will be too.
Merging happens in your browser, without uploading your files. The free trial merges two clips; with ToolStudio Pro you can merge as many as you need and use the tool without limits.
How to merge several audio files into one
- Drag in the audio files you want to merge or click to choose them.
- Put them in order with the arrows in the list.
- Choose whether you want silence or a crossfade between them.
- Click “Merge audio”.
- Listen to the result and download the single file as MP3 or WAV.
When to merge audio files
- Combine several voice memos into one file.
- Join the chapters of an audiobook or the segments of a podcast.
- Create a continuous mix of songs with crossfades.
- Add an intro and an outro to a recording.
- Put the music for a presentation or event into a single file.
Supported formats
- Input: MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WEBM, AIFF and the audio from MP4 or MOV videos.
- Output: MP3 at 128, 192, 256 or 320 kbps, or 16-bit PCM WAV.
- Up to 250 MB per file. The sample rate and channels (mono or stereo) are preserved.
Frequently Asked Questions
How many audio files can I merge for free?
The free trial merges 2 clips. With ToolStudio Pro you can merge up to 30 at once and use every tool without limits and without ads.
Can I merge files in different formats?
Yes. You can mix MP3, WAV, M4A, OGG, FLAC and more; the result is saved in a single format, MP3 or WAV.
How do I change the order?
With the arrows next to each file in the list. They’re joined from top to bottom.
Is my audio uploaded to a server?
No. Your audio is read, processed and converted right in your browser using the Web Audio API. The file is never uploaded to a server and never leaves your device.
