Combine audio files.
Never leave your browser.
Drop in voice memos, recordings, or clips from your local library, put them in order, add a gap or crossfade, and download one combined WAV. Nothing is uploaded anywhere.
Merge audio clips
No clips added yet.
Checking local library…
Add files or pick from your local library to build a clip list.
Add audio files or pick recordings from your local library to build a clip list.
Merging audio shouldn't require an upload
Most online mergers work by uploading your files to a server, joining them there, and emailing you a link. This one keeps every step — decode, reorder, join, encode — on your device.
Files never leave your browser
Decoding and joining happen with the Web Audio API in this tab, nothing else.
Your local library stays local
Adding a saved recording reads it from IndexedDB in this browser — no network call.
Downloads are explicit
Download the WAV or save it to your local library when you choose to. Nothing else happens automatically.
Four steps to one clean file
Add clips, put them in the right order, decide how they should meet, and export. No timeline, no re-encoding round trips.
- 1
Add your clips
Drop files, choose them from disk, or add takes saved by the voice recorder.
- 2
Put them in order
Use the up and down arrows, or drag a row, until the sequence reads right.
- 3
Choose a gap or crossfade
Add a beat of silence between clips, or blend adjacent ones with a short crossfade.
- 4
Merge and download
Preview the result, download the WAV, or save it straight to your local library.
A few reasons people merge audio clips
Stitching voice memos back together
A long thought recorded across a few interruptions ends up as several files. Merge them in order, add a short gap so sentences don't run together, and you have one clean recording again.
One file, ready to transcribe
Transcription tools work best with a single file. Combine multiple recordings first, then send the merged result into the free transcribe tool — still without an upload.
Building a rough podcast cut
Merge an intro clip, a main take, and an outro with a light crossfade so transitions don't click or pop, without opening a full audio editor.
Combining multi-part recordings
Some recorders split long sessions into parts automatically. Bring the parts back together here in the original order before you archive or share the final take.
Record, trim, split, and transcribe too — all local
Need a take before you merge it? Use the free voice recorder to capture one, or the mic test if your input isn't behaving. Need to clean up a clip first? Try the audio trimmer, or the audio splitter if you need to break one file into pieces instead. Once your merged file is ready, the transcribe tool can turn it into text — still no upload. Curious how long the result runs? The duration calculator checks in an instant. Trimming, splitting, and merging in the same session? The Audio Studio puts all three on one timeline instead of three separate tools.
Audio merger FAQ
What audio formats can I merge?
Anything your browser can decode: WAV, MP3, M4A, AAC, FLAC, OGG, Opus, WebM, and the audio track of common video containers. If a file will not decode, that clip shows an inline error and the rest of your list is unaffected.
Is this actually private, or does it upload my files?
Nothing is uploaded. Files are decoded and merged with the Web Audio API right in this tab. Clips you add from your local library never leave the browser either — there is no server involved in the merge at all.
What format is the merged file?
A standard 16-bit PCM WAV, resampled to the highest source sample rate in your clip list (capped at 48kHz) so quality is not lost from your best source file.
Can I reorder clips before merging?
Yes. Use the up and down arrows on each clip row, or drag a row to a new position. The live summary line always reflects the current order and total length.
Is there a limit on how many files or how long they can be?
No hard cap — this runs entirely in your browser tab, so the practical limit is your device’s memory and patience. Very long merges (an hour-plus of audio) will take longer and use more RAM.
Does this work on my phone?
It works in any modern mobile browser that supports the Web Audio API. On iOS Safari and Android Chrome you can pick files from your device; drag-and-drop is a desktop-only convenience.