Audio Merger

Most online audio joiners upload your recordings to a server, which is slow for long files and not ideal for private voice notes, interviews or unreleased music. This audio merger works differently: it uses your browser's built-in audio engine to decode each file, place the tracks one after another and write the result as a single WAV file on your own device. Use it to join voice memos, podcast segments, audiobook chapters, song stems recorded in parts or ringtone clips.

Any format your browser can play: MP3, WAV, M4A/AAC, OGG and Opus work in all modern browsers, and FLAC works in current Chrome, Edge, Firefox and Safari. You can mix formats in one merge – for example an MP3 intro with a WAV recording.

The merged file is saved as WAV (16-bit), which plays everywhere and keeps the quality of your sources. If you need a smaller file, convert the WAV to MP3 afterwards with any converter or audio editor.

When files have different sample rates, the merger uses the highest one and resamples the others, so nothing plays too fast or too slow. If any track is stereo, the output is stereo; mono tracks are played on both channels.

Because everything happens on your device, very long merges use a lot of memory – WAV takes about 10 MB per minute of stereo audio. On a phone, merge in smaller batches if the page becomes slow, then merge the results. A laptop or desktop handles hours of audio more comfortably.