Audio Merger
Join multiple audio files together in order. All processing happens locally in your browser; files never leave your device.
$Drag in multiple audio files, or click to select
Batch selection supported — you need at least 2 audio files
Read into browser memory in order — nothing is uploaded
Drag to reorder and open the waveform to trim each clip
FFmpeg WASM concatenates and exports locally
Merge Audio Online with Waveform Trim & Reorder
Local · No uploadsCombine multiple audio files into one, in the order you choose, with MP3, AAC, WAV or FLAC output. Reorder tracks by drag and drop, trim each clip on a waveform, set title, artist and cover art, and estimate the output size before merging. Great for recordings, podcast episodes, audiobooks and medleys—processing stays local.
Quick Answers
- Audio files are joined in the order you set; different formats, sample rates or channel layouts are normalized before merging. MP3, AAC, WAV and FLAC output are supported.
- Each clip can be trimmed on a waveform, previewed independently, and reordered by drag and drop. The page estimates output size from duration and bitrate.
- MP3 and FLAC output can store title, artist and embedded cover art. The result name follows the first audio file, and changing inputs after a merge requires another merge to update the result.
How to Merge, Reorder and Trim Audio
- 1
Upload two or more audio files, including a batch from another tool
- 2
Drag to reorder tracks and expand a waveform to trim each clip
- 3
Choose the output format and quality, then set title, artist and cover
- 4
Review the estimated size, merge, preview and download the result
Common Audio Merging Uses
- Join multiple recordings into one complete file
- Build a music medley, podcast episode or audiobook chapter
- Remove silence from the beginning and end of each clip before joining
- Send a batch of converted NCM tracks straight into one merge
Audio Merge and Re-encoding Limits
- Different formats or sample rates are re-encoded to a common output and may add one generation of lossy compression
- Clips with very different volume levels should be normalized before merging
- Adding cover art to MP3/FLAC disables the pure stream-copy path and requires re-encoding
- Merging large files takes time and depends on available browser memory
How to Choose an Audio Merger
- vs. audio editing software: single-purpose and faster for simple joins
- vs. upload-based tools: nothing is uploaded, so it's private
- vs. simple joiners: waveform trimming, drag reorder, output-size estimates and metadata snapshots are built in
Audio Merge, Reorder and Trim FAQ
Can I merge audio files in different formats?
Yes. Files in different formats are first converted to the target format, then joined in order.
How many audio files can I merge?
There's no fixed limit — it depends on your browser's available memory.
Does merging reduce audio quality?
Different specs or embedded artwork require re-encoding, using the selected bitrate. Matching codecs without trim or artwork may use stream-copy concatenation to avoid another generation of lossy encoding.
Can I change the order of the files?
Yes. Drag tracks in the list or use the move up and move down buttons to set the final sequence.
Can I merge only part of each audio file?
Yes. Expand a track, select a start and end range on the waveform, and only that range is included in the merge.
Why is the output not named merged?
The output name follows the first input file so downloads stay recognizable instead of appearing as a generic merged file.
Can I set a title, artist and cover after merging?
Yes. MP3 and FLAC output support title, artist and embedded cover art. The values are written during processing.
Why does changing the cover not update a finished result?
A finished result uses a snapshot of the cover and tags taken at merge time. Change the inputs and merge again to generate a new file.
Can I combine multiple recordings into one?
Yes. Upload the recordings, arrange the order, and merge them into a single audio file in one click.