Drag and drop multiple audio files or click to select them. Supports MP3, WAV, FLAC, OGG, and AAC formats.
Reorder the files as needed. Set crossfade or gap duration between tracks for smooth transitions.
Click merge and download a single audio file containing all your tracks combined.
Your audio files never leave your device. All merging happens in your browser — no server uploads.
No registration, no file limits, no watermarks. Merge as many audio files as you need, completely free.
Add smooth crossfade transitions between tracks or set custom gap durations. Professional results with no effort.
Combine multiple podcast segments or interview clips into a single episode — trim each clip first to remove unwanted sections before merging.
Create a DJ-style mixtape by merging songs with crossfade transitions between tracks.
Assemble a complete audiobook chapter from separately recorded sections.
Join split audio recordings from a meeting or lecture into one continuous file.
| Format | Description | Best For |
|---|---|---|
| MP3 | Compressed lossy audio | Podcast episodes, music mixes |
| WAV | Uncompressed lossless audio | Studio production, master recordings |
| FLAC | Compressed lossless audio | High-quality music compilations |
| OGG | Open-source lossy audio | Web audio projects, game soundtracks |
| AAC | Advanced lossy audio | Mobile playlists, streaming |
Use crossfade durations of 2-3 seconds for smooth music transitions, or 0.5 seconds for speech segments.
Ensure all input files have the same sample rate and channel count for the cleanest merge. Use Convert Audio to standardize formats before merging.
Set a short gap duration between podcast segments to give listeners a natural pause between topics.
Preview the merged output to check transitions before downloading. To add fade effects between segments, use the Fade In/Out tool on each clip first.
Merging multiple audio files into one can be done in your browser or through upload-based services. The approach you choose affects privacy, speed, and cost.
FyleTools uses FFmpeg compiled to WebAssembly to decode all uploaded audio files in your browser, concatenate them in the specified order with optional crossfade or gap, and encode the result as a single output file. Everything runs locally on your device.