Audio Joiner: Merge Audio Files Online Free
Merge multiple audio files into one seamless track
Drop files here or click to browse
MP3, WAV, M4A, FLAC, AAC, and more · first 30 min free
- 99%
- Accuracy
- 99+
- Languages
- Anytime
- Cancel, no contract
- Free
- 30 min, no signup
Why use Audio Joiner?
Drag & Reorder
Upload multiple audio files and drag them into your preferred order before merging into one track.
Mix Formats
Combine different audio formats in one merge. Mix MP3, WAV, M4A, FLAC, and more. We handle the conversion.
Choose Output Format
Export your merged audio as MP3, WAV, M4A, or FLAC. Control quality settings for the final file.
Seamless Transitions
Files are joined with precise alignment and no gaps or clicks between segments.
How it works
Upload Audio Files
Upload two or more audio files in any supported format. Drag and drop to reorder them.
Choose Output Settings
Select your output format (MP3, WAV, M4A, FLAC) and quality. Preview the order before merging.
Download Merged File
Click join and download your single merged audio file in seconds.
Audio Joiner vs typing it out by hand
Why upload-and-go beats manual transcription every time.
| Capability | CATT | Manual transcription |
|---|---|---|
| Time to first draft | Minutes per file | 8 to 10 hours per audio hour |
| Accuracy | 99% on clear audio | Depends on the typist |
| Speaker detection | Automatic | Tagged by hand |
| Languages | 99+ supported | Whatever you speak |
| Exports | TXT, DOCX, PDF, SRT, VTT | Whatever you build by hand |
| Cost | Free for the first 30 minutes | Your time, every time |
Simple pricing
Free for files up to 30 minutes, no card needed. Paid plans start at $14.99.
Free
- 30 free transcriptions every day, each up to 30 minutes
- Your first file on our premium engine, up to an hour, with speaker detection and top accuracy
- Free TXT download, plus copy and edit every transcript
Cancel anytime. Try the free plan before you upgrade. See all plans
Frequently asked questions
You can merge up to 10 audio files at once. Upload them all and drag to arrange the order before joining.
Yes. You can combine MP3, WAV, M4A, FLAC, AAC, and OGG files in a single merge. We convert everything to your chosen output format.
No. Our audio joiner creates seamless transitions with no gaps, clicks, or pops between segments.
Export as MP3 (smallest size), WAV (lossless), M4A (Apple compatible), or FLAC (lossless compressed).
Each file gets a free 30-minute preview on the no-signup tier. Create a free account for full-length merges.