SEERSeerKits

Merge Audio Files Online

Combine multiple tracks into one seamless file in the order you choose. Local merging keeps your library private — free for everyday playlists.

Local Processing

Drag and drop your file here

or click to browse from your device

mp3wavaacm4aogg

Maximum file size: 100 MB

Import fromOneDrive URLs supported

Supported Formats

File types you can use with Audio Merger.

Supported Input Formats

mp3wavaacm4aogg

Available Output Formats

mp3wavm4a

Usage Limits

Free tier limits for Audio Merger on the web.

  • Max file size

    100 MB per file

  • Daily free uses

    10 conversions per day

  • Batch limit

    Up to 5 files at once

Need more? Try the Seer app for expanded limits.

Privacy & Processing

Related Tools

Audio Cutter
Slice songs, podcasts, and voice memos to exact timestamps. Waveform preview and local processing — free, no account required.
Open tool →
Audio Converter
Switch between MP3, WAV, FLAC, AAC, and more without installing software. Local processing protects your recordings — free for files up to 100 MB.
Open tool →
Audio Speed Changer
Speed up or slow down playback from 0.5× to 2× while optionally preserving pitch. Great for study, practice, and content review — runs locally.
Open tool →

How to Use

How to merge audio files with SeerKits

  1. 1

    Add tracks to the list

    Upload two or more audio files. Reorder them to match your desired playback sequence.

  2. 2

    Choose output format

    Select MP3, WAV, or M4A for the combined file.

  3. 3

    Merge and download

    Run merge and save the result. Open Seer Audio to adjust gaps or normalize volume across chapters.

Need more power?

Take Audio Merger further with Seer Audio

The web tool is perfect for quick jobs. When you need bigger files, batch workflows, or pro-grade controls, continue in the Seer app ecosystem — same privacy-first approach, more headroom.

  • Larger file limits beyond the web free tier
  • Batch processing for multiple files at once
  • Advanced codec and quality options
  • Offline processing when you need it on the go
Download Seer Audio

Frequently Asked Questions

Can I merge files with different formats?
SeerKits normalizes mixed inputs to your chosen output format during merge. For bit-perfect joins without re-encoding, use Seer Audio on desktop.
How many files can I combine for free?
Up to five tracks per merge job on the web free tier, within the daily usage limit. Larger projects sync to Seer Audio.
Will merged audio stay in my chosen order?
Yes — drag rows to reorder before merging. The exported file plays segments exactly in that sequence.