MP3 Cutter — Trim Audio Free Without Uploading
Cut the start and end off an MP3, M4A, WAV, or video soundtrack and download the trimmed MP3. Free, browser-only — no upload, no signup, no watermark.
Example: start 4.5s · end 128.0s → a clean MP3 with the dead air gone
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MP3 Cutter — Trim Audio Free Without Uploading
Most recordings need the same two edits: drop the silence and throat-clearing at the front, and cut the dead air at the end. This cutter does exactly that. Drop an MP3, M4A, WAV, FLAC, or even an MP4 video, set a start and end time in seconds, and download the trimmed section as an MP3. The file is decoded by your browser's own audio engine and re-encoded locally with lamejs, so the recording never leaves your device — which matters when the audio is an interview, a voice memo, or a client call. Drop several files at once and each one keeps its own start and end.
Precise Start and End
Set the in and out point in seconds, to one decimal place. The tool shows how much audio each setting keeps before you encode.
100% Browser-Only
No upload and no server copy. Decoding and MP3 encoding both run in the tab, so private recordings stay on your machine.
Takes Video Files Too
MP4, MOV, and WebM are accepted — the soundtrack is extracted and trimmed in the same step, so you do not need a separate converter first.
Free, No Watermark
No signup, no size cap, no audio watermark spliced into the output. Bitrate is yours to pick from 96 to 320 kbps.
!How to Merge PDFs Locally
Drop an audio or video file. It is decoded in your browser and its length, sample rate, and channel count are shown.
Type a start time and an end time in seconds. The row shows how long the kept section is as you type.
Pick an MP3 bitrate — 128 kbps is plenty for speech, 192 or higher suits music.
Click Cut & download MP3. The trimmed audio is encoded locally and saved straight to your downloads.
Local vs. Server Merging
| Feature | Local (Us) | Cloud Merger |
|---|---|---|
| Privacy | No upload (browser-only) | Recording uploaded to vendor cloud |
| Length limit | Bounded only by your device memory | Free tiers often cap minutes |
| Watermark | Never | Audio tag common on free tier |
| Signup | None | Often required to download |
Technical FAQ
Experience High-Speed Local Merging
Ready to try a different approach? Check out our specialized tool variants for even better performance and quality.
Need to join several files instead?