Audio Merger Online Free — Merge & Join MP3, WAV Files
Merge up to 5 MP3/WAV files — Join sequentially or Mix simultaneously — No upload
Merge multiple audio files into one online. Choose sequential join (one after another) or simultaneous mix (overlapping). Drag to reorder files, set crossfade duration between tracks, and download as a single WAV file.
Drop audio files here or click to browse
MP3, WAV, OGG — Up to 5 files
How to Merge Audio Files Online
Upload up to 5 audio files. Choose Join mode to play them one after another (with optional crossfade), or Mix mode to overlay them simultaneously. Reorder tracks by dragging, adjust per-track volume and delay in mix mode, then click Merge to download as WAV.
Frequently Asked Questions
How many files can I merge?
Up to 5 audio files per session. Drag to reorder them before merging.
What is the difference between join and mix modes?
Join plays files one after another (sequential). Mix overlaps all files simultaneously — useful for adding background music to a voiceover.
What is crossfade?
Crossfade smoothly fades out one track while fading in the next. Set 0 for a hard cut, or 0.5-2 seconds for a smooth transition.
What is the output format?
Merged audio is downloaded as WAV. The output sample rate matches the first file uploaded.
Can I merge files with different sample rates?
Yes. Files are resampled to match the first file's sample rate before merging.