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Rotina Diária

Merge audio

Combine multiple audio files into one MP3 or WAV, in any order, with a smooth transition.

or drag and drop here · Ctrl+V to paste

0 joins tracks directly; 2 to 3 seconds creates a smooth crossfade.

Processed on your device. Your files aren't uploaded to any server.

How to use: Merge audio

  1. Select or drag in your audio files (you can use different formats).
  2. Drag the list or use the arrows to set the order.
  3. Choose MP3 or WAV and, if you'd like, set the transition between tracks.
  4. Click Merge audio and download your combined file.

About this tool

Each audio file is decoded on your device, converted to 44.1 kHz, and joined in sequence. With a transition, one track fades out as the next fades in (constant-power crossfade), so the volume doesn't dip in the middle.

Frequently asked questions

Can I merge WhatsApp audio files?

Yes. WhatsApp OGG/OPUS audio files are supported and can be combined with MP3, M4A, WAV, and other formats.

Is there a file limit?

There's no limit on the number of files. The result is created in memory, so on phones, we recommend keeping the total audio to about one hour or less.

Does it work in all browsers?

It works in current versions of Chrome, Edge, Firefox, and Safari that support WebCodecs. Processing uses your device’s video acceleration, so it’s usually faster than uploading the file to a website.

Are my files uploaded to a server?

No. This tool runs entirely in your browser: your file is read and processed on your device, and not a single byte is sent over the internet. You can even disconnect from the internet after the page loads.

Is it really free? Is there a daily limit?

It's free with no daily limits. Processing happens on your device, so there's no per-use cost and no need to limit you.

Does it work on phones?

Yes. The site works in any modern browser on Android, iPhone, Windows, Mac, and Linux—no installation needed.

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