Audio Joiner
Merge two or more audio files into one — even mixed formats — right in your browser.
No installs, no upload, 100% free.
Join audio files in three steps
A free audio joiner that runs entirely in your browser. Drop files, set the order, download one seamless track.
- Step 1
Upload your files
Drag two or more audio files into the upload area. MP3, WAV, M4A, FLAC, OGG — mixing formats in one join is fine; every input is normalized automatically.
- Step 2
Set the order
Files join top to bottom. Use the arrows to reorder, ✕ to drop one, and pick the output format — MP3, M4A, FLAC, or WAV.
- Step 3
Join and download
Hit Join and the merged file is encoded on your device — nothing is uploaded. Download starts the moment it finishes.
What people merge
One continuous file plays, uploads, and archives better than a folder of parts.
Split albums & audiobooks
Combine chapter or track files into one continuous listen for players that don't handle playlists well.
Multi-part recordings
Voice memos and field recordings that stopped and restarted become one clean take.
Podcast segments
Stitch the intro, interview, and outro into a single episode file without opening an editor.
Meeting parts
Calls recorded in chunks join into one file — easier to share, archive, and transcribe.
Mixed formats in
An MP3 intro plus a WAV interview? Inputs are resampled to one rate and layout, so mixed sources join without glitches.
Need it as text?
Join the parts, then let SlayScribe transcribe the full recording into accurate text in one pass.
Why join in the browser
Merging audio is a local operation — there's no reason your recordings should travel to someone's server for it. This joiner decodes every file on your device, normalizes them to one sample rate and channel layout, and encodes a single output. Private, free, and no length limits beyond your device's memory.
Frequently asked questions
Does joining audio cost anything?
No. No account, no watermarks, no per-file limit — the joiner runs in your browser and nothing is charged.
Can I mix different formats?
Yes. Every input is decoded and normalized to the same sample rate and channel layout before joining, so MP3 + WAV + M4A works fine.
How many files can I join?
As many as you like, as long as they add up to under 1 GB — that's the in-browser memory ceiling.
Will there be gaps or clicks between files?
No silence is added — files are concatenated back to back. If a source file itself starts or ends with silence, that silence is kept.
Do the files I join leave my device?
No. Decoding, joining, and encoding all happen locally in the browser tab.
Can I get the joined recording as text?
Yes — SlayScribe transcribes the merged file into accurate text with timestamps in 99 languages.
Need the words, not just the audio?
SlayScribe turns any audio or video into accurate text in seconds — transcripts, captions, and subtitles in 99 languages.
Transcribe to text