How to Merge Audio Files into One — Even with Mixed Formats
Join split voice memos or lecture recordings into a single MP3, in the order you choose. Mixed formats and sample rates are matched automatically, inside your browser.
Recordings rarely arrive in one piece — a voice memo saved as three files, a lecture split into part one and part two. To listen straight through, they need joining; and when the formats are a mix of M4A and MP3, the usual tricks fall apart. In the browser, you just set the order and the rest is matched automatically.
How — three steps
- 1Open Audio Merge and add two or more files (keep adding as needed).
- 2Set the order with the up/down buttons — you can preview each file in the list.
- 3Hit merge, and it saves as a single MP3.
TipUnsure of the order? Play the first few seconds of each file right in the list.
Mixed formats are fine
Joining requires every segment to share one format (sample rate, channels), so each file is converted to a common 44.1kHz stereo automatically before stitching. MP3, M4A, WAV, OGG and FLAC can all go in together — no pre-converting.
It matters more because these are recordings
Meetings, calls, personal memos — recordings tend to be sensitive. Merging runs inside your browser, so the files are never uploaded.
Stitch your split recordings back into one.
Open Audio Merge →