How many files can I merge?

There is no hard limit, but browsers start to slow down above ~20 tracks or 500 MB combined. For larger jobs, merge in batches.

Do I need to match sample rates?

No. The merger renders every source into a single OfflineAudioContext so mismatched rates are resampled automatically.

Yes. Each track card has a remove button. You can also drag to reorder at any time before merging.

Audio MergerLocal

inputaudio-mergeroutputMerge multiple MP3 and WAV files into one. Drag to reorder and add crossfades between tracks.

Drop MP3 or WAV files here

or click to browse

⎆Your audio never leaves your browser. All merging and encoding happens locally.

Combine multiple audio files into one with optional crossfades.