Merge Audio
Upload 2 to 5 audio files. They will be joined in order. Free, no sign-up. Files auto-deleted after 15 minutes.
Drop 2–5 audio files here
or click to browse
This tool is for files you own or have permission to use.
Upload 2 to 5 audio files. They will be joined in order. Free, no sign-up. Files auto-deleted after 15 minutes.
Drop 2–5 audio files here
or click to browse
This tool is for files you own or have permission to use.
Merge Audio concatenates separate recordings into a single file—podcast segments, album sides, language-lesson parts, or stems you want in one continuous playback. You upload two to five clips, preview each waveform, pick an output format, then download the combined result.
You must add at least 2 and no more than 5 files. Each upload can be up to 100MB. Common types include MP3, M4A, WAV, OGG, FLAC, OPUS, AIFF, WMA, and CAF (see the uploader and your browser’s file picker). If a format fails validation, convert it first with Convert Audio Format.
Tracks are joined in selection order: the first file you choose (or the top of your multi-select list) becomes the beginning of the merged audio, then the second file is appended, and so on. There is no drag-and-drop reorder on the page—if the sequence is wrong, reload and select files again in the desired order.
Before clicking Merge, choose how the final file should be encoded: MP3, M4A, M4R, FLAC, WAV, OGG, OPUS, AIFF, WMA, or CAF. The server decodes inputs and encodes one continuous output; mixing wildly different sample rates or loudness levels may still produce a valid file, but you may want to normalize levels in a DAW first for a polished podcast or album.
Merging adds length by appending files. To cut a single MP3 down to a range, use Audio Cutter. Many workflows: trim each chapter, then merge—or merge raw takes, then convert quality with Change Audio Quality.
This flow focuses on joining audio. To set title, artist, album, or cover art on the result, open the merged file on the main MP3 Toolbox editor (when your output is MP3 or after converting as needed).
Files are deleted automatically after about 15 minutes. Only merge content you are allowed to use. See Privacy and Terms.
Step-by-step for this tool and the cutter is in Cut and merge audio online. Technical background: How it works and Formats.
Exporting to lossy formats re-encodes the combined audio, which is another generation of compression. For best archival results, consider merging to FLAC or WAV first, then creating MP3 copies if needed—or keep originals and merge only when distributing.
Not in one job on this page. Merge in batches (e.g. merge A+B+C, then merge that result with D+E in a second pass), or use desktop software for large playlists.
No sign-up is required.