BRING YOUR SOUNDS TOGETHER
Free Online Audio Merger
Arrange, combine, and save your audio. All on your device.
- 1Add audio
- 2Arrange
- 3Merge
- 4Download
Drop your audio files here
Bring your sounds together, in the order you choose.
WAV, MP3, M4A, Ogg, WebM & more · Codec support variesYour audio 0
Arrange your files in the order they should play.
MP3 is encoded locally. Other output choices depend on this browser’s encoders.
Checking your audio
Your audio stays on this device. Keep this tab open.
Local processing. No artificial limits from Splice; your browser, codecs and device set the real limits.
Combine your audio, in your order.
Merge audio files into one track without uploading your recordings.
- 1
Add and arrange
Add two or more audio files. Drag to reorder, or use the keyboard and arrow buttons.
- 2
Choose the result
Select an available output format. Browser codec support determines the choices you see.
- 3
Merge locally
Processing happens in a worker on your device. Progress comes from actual media processing; cancellation keeps your inputs.
- 4
Listen and save
Preview the finished audio and download it. Save the result before leaving this page.
Formats & compatibility
WAV PCM, MP3, M4A/AAC, Ogg/Opus and WebM audio are recognized by their contents, not just extensions. Other audio such as FLAC or Ogg/Vorbis depends on your browser’s decoder. Damaged files, surround audio and files with extra tracks are rejected with a clear message.
Outputs include MP3, 16-bit PCM WAV, M4A/AAC, Ogg/Opus and WebM/Opus. MP3 is encoded locally; other formats appear where the browser can encode them. Conversion and compression support 44.1/48 kHz and mono/stereo where the selected encoder allows them.
Matching 16-bit PCM WAV files can be copied into WAV without re-encoding when their sample rate and channels match the output. Other combinations are decoded and normalized to 48 kHz stereo before encoding. Compressed files are re-encoded for a continuous timeline rather than joined by bytes.
Private, with practical limits
No uploads, mandatory account or watermark. Splice imposes no file-size or duration cap, and no file-count cap. Codec support, free storage, available RAM and your device’s processing power still matter.
Where supported, Splice writes incrementally to a chosen destination or temporary browser disk storage. Otherwise, output is held in memory, which is less suitable for large files. WAV output switches to RF64 when the estimated audio data exceeds the regular WAV size range; older players may not support RF64.
Keep this tab open. Canceling does not commit a partial replacement to your chosen file. Selections and results are cleared when you leave; save the output before closing.
A few useful answers
Can I use MP3 files?
Yes, when your browser can decode the MP3 audio. You can combine MP3 recordings and save to a supported output format. You can also export MP3. Choose its bitrate to balance size and quality.
Will the audio quality change?
Compatible PCM WAV files can take the original-quality copy path. Other inputs are decoded and normalized; compressed output uses lossy re-encoding. WAV keeps the decoded audio at 16-bit resolution.
Why is a format missing?
Available encoders differ by browser and operating system. Only supported output choices appear, and bitrate choices adapt to your encoder. MP3 requires browser support for WebAssembly SIMD and workers when a native encoder is unavailable. Opus outputs use 48 kHz. If an advanced combination is unavailable, processing is blocked until you choose supported settings.
Can I cancel or process another file?
Cancel processing to return to your current files. Use Back to files after a result to run another operation, or choose a new file. Temporary outputs and preview resources are released when replaced.