Audio Merger

Merge multiple audio files into one file with concatenation and mixing modes.

Audio Merger - Select Your Files

Drag and drop files here or click to select

Maximum file size: 1 GB · Maximum file count: 100

Audio Merger Tool Guide

Audio Merger is a free online tool that merges multiple audio files into one file. Supports two merge modes: concatenation mode (connect audio in sequence) and mixing mode (play all audio simultaneously). Supports fade in/out effects to make merged audio more natural. All processing is done locally in your browser, files are never uploaded to the server, completely protecting your privacy and data security.

Two merge modes, flexible combination
100% local processing, privacy secure
Support fade in/out, natural effects

Tool Features

Two Merge Modes

Supports concatenation mode and mixing mode. Concatenation mode: connect multiple audio files in sequence, suitable for creating playlists, joining audio clips, etc. Mixing mode: play all audio files simultaneously, suitable for creating background music mixing, sound effect overlay, etc. Can preview each audio file, adjust file order, delete unnecessary files.

Fade In/Out Effects

Supports adding fade in/out effects when merging audio, making audio transitions more natural and smooth. Can set fade in and fade out duration to avoid abrupt audio starts or ends. Fade in/out effects apply to audio connection points in concatenation mode, making transitions between multiple audio clips smoother.

Multi-file Management and Preview

Supports uploading multiple audio files simultaneously (up to 100), can preview each audio file. Displays detailed information for each file (file name, size, duration, format), can adjust file order, delete unnecessary files. Real-time display of total duration after merge for easy understanding of merge results. After merge, can preview merged audio, then download if satisfied.

How to Use

  1. 1

    Select Audio Files

    Click the select area or drag and drop your audio files. The tool supports MP3, WAV, AAC, OGG, FLAC, M4A formats, maximum 100 files. After selection, file list will be displayed automatically, can preview each audio file, view file information (file name, size, duration, format). Can adjust file order, delete unnecessary files.

  2. 2

    Set Merge Options

    Select merge mode: concatenation mode (connect audio in sequence, suitable for creating playlists) or mixing mode (play all audio simultaneously, suitable for mixing). Set output format (MP3, WAV, AAC, OGG, FLAC, M4A) and quality (high, medium, low). If needed, set fade in/out effects to make audio transitions more natural.

  3. 3

    Start Merging and Download

    Click the "Start Merging" button to begin processing. The tool will display merge progress (preparing, loading audio, finalizing), and merged audio will be displayed automatically after processing. Can play merged audio to preview effects, then click "Download Merged File" to save the file.

Frequently Asked Questions

Does audio merging affect quality?
Quality impact during merge depends on selected output format and quality settings. If selecting high quality output, can maintain good quality; if selecting lower quality, may reduce quality to decrease file size. Concatenation mode usually doesn't lose quality; mixing mode may need adjustment if audio volumes are unbalanced. Recommend using high quality settings for best results.
Will my audio files be uploaded to the server?
No, all processing is done in your browser. Your audio files never leave your device, completely protecting your privacy.
How many audio files can I merge?
The tool supports merging up to 100 audio files simultaneously. Merge time depends on file count, file size and selected mode. During processing, you can view progress to keep track of merge status. We recommend keeping the page open when merging large files or many files to avoid interruption.

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