Audio Joiner

Merge Audio Files

• Unlimited Tracks: Join as many MP3, WAV, or M4A files as you need into a single output.
• Crossfade Support: Enable smooth transitions between tracks for a professional DJ mix feel.
• Size Estimation: See how big your file will be before you download.
• Bitrate Control: Choose high quality 320kbps for music or 128kbps for speech.
• Format Mixing: Combine different file types (e.g., MP3 + WAV) seamlessly.
• Client-Side: All processing happens in your browser for maximum speed and privacy.

Create Mashups

Want to combine your favorite songs into a continuous workout mix? Use our crossfade feature to blend them together without awkward gaps.

Join Voice Memos

Recorded an interview in 5 different parts? Select all your voice notes and merge them into one complete interview file instantly.

Smart Processing

We automatically handle different sample rates and bitrates, ensuring the final output is high-quality and compatible with all players.

Universal Export

Save your final mix as a standard MP3, high-quality M4A (AAC), or lossless WAV file depending on your needs.

100% Private

Since we don't upload your files to a server, your personal audio recordings remain completely private on your device.