Merge Audio
Combine 2-6 audio clips into one file, in the order you choose
Clips are joined in the order shown above — reorder them with the arrows before merging. Sample rate and channels are normalized automatically, so clips from different sources still combine cleanly.
⚠️ Please don't close or refresh this page until it's done, or you may lose the result.
💡 Large files travel at your connection's pace: the upload continues on its own and resumes safely, so a slow link only affects time, never your credits.
What happens when inputs disagree
Merging naive concatenation breaks the moment files differ, so the pipeline normalizes first:
- Sample rate — every input resampled to the highest rate among the files (44.1k stays 44.1k).
- Channels — mono files are upmixed to stereo when any stereo file exists; a stereo-only sequence stays stereo.
- Codec — MP3, M4A, WAV, FLAC and OGG inputs decode to PCM internally; output encodes to your chosen MP3 bitrate or lossless WAV.
- Optional crossfade — up to 5 s overlapping fade between adjacent items, computed on PCM for click-free transitions.
Order is drag-and-drop editable before you start, and the total duration estimate updates live.
Gapless joins with smart format handling
Concatenate recordings, chapters or tracks into one file — mismatched sample rates and channel counts are normalized automatically instead of producing chipmunk audio.
Two to six clips, one file
Append two to six audio clips into a single continuous track. Reorder them before merging - spoken segments, music beds and field recordings - and download one file instead of juggling a folder of parts.
Mismatched audio joins cleanly
Every clip's sample rate and channel layout are normalized before the join, so recordings from different phones, apps and microphones merge without pops, pitch shifts or dead silence between segments.
Pick MP3, WAV, OGG, AAC or FLAC
Choose the format that fits your project - compact MP3 for sharing, WAV or FLAC for editing, OGG or AAC for compatibility. The heavy concatenation runs on our server, not in your browser.
How it works
- 1
Add 2-6 audio clips, in any format.
- 2
Reorder them with the arrows — this is the order they'll play in.
- 3
Pick an output format, click merge, then preview and download. Files auto-delete in 30 minutes.
Frequently asked questions
Can I merge clips with different sample rates or formats?⌄
Yes — every clip is automatically normalized to a common sample rate and stereo channel layout before joining, so mismatched sources still combine into one clean track.
What output format do I get?⌄
Pick any of MP3, WAV, OGG, AAC or FLAC before merging — every clip is normalized and re-encoded into that single format regardless of what formats you uploaded.
How many clips can I merge, and what happens to my files?⌄
Up to 6 clips per merge. Both your uploads and the result are deleted automatically within 30 minutes, and only your session's signed token can access the job.
Is there a limit on number or length of files?⌄
Up to 20 inputs and 2 GB total upload. The merged output itself may be hours long — the limit is on transfer, not duration, since assembly streams on the server.
Related tools
What Is Merge Audio?
Merge Audio joins several clips into a single file in the order you choose. Instead of juggling half a dozen recordings during a meeting or sending five voice memos to one contact, you stack them, reorder them with the arrow buttons, and get one continuous track back. Podcasters stitch episodes, teachers combine lectures, and anyone merges notes, meetings or songs recorded in separate takes. The server normalizes each clip to the same sample rate and channel layout before joining, so recordings from different phones, recorders or apps still combine cleanly. Whether the clips come from one meeting or several weeks apart, the join itself takes only a few minutes from upload to download.
What this tool can do
- 🔗 Combine 2 to 6 audio clips into one file
- ↕️ Reorder clips with up and down arrows before merging
- 🧩 Auto-normalize sample rate and channels so mismatched clips still join cleanly
- 🔀 Export the result as MP3, WAV, OGG, AAC or FLAC
- ⚙️ Concatenated server-side — your device only uploads and downloads
When you would use it
- Stitching several interview takes into one complete episode
- Combining chapters of an audiobook or lecture series
- Appending an outro or disclaimer to an existing recording
- Building one track from multiple short voice-memo takes
Your audio is uploaded over an encrypted connection, merged on our servers, and automatically deleted within 30 minutes. The honest limits: clips are joined end to end — the tool does not mix them on top of each other, apply crossfades, or balance loudness between clips. If one take is much quieter than the others, adjust its volume first with the volume tool, and if you want smooth transitions between pieces, apply fades before merging.
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