How to cut MP3 online: trim a piece and join fragments
Want to keep just the chorus, cut the silence at the start, grab a specific snippet or assemble one track from several pieces? All of that is done online, right in your browser — no software to install and nothing uploaded.
Why trim and join audio
Make a ringtone or a short snippet from a song.
Remove silence, a count-in or junk at the start and end.
Cut out a specific fragment — a verse, a solo, a line.
Join several pieces into one track, set or demo.
Prepare a reference before uploading to Suno.
How to trim mp3 (or wav) in 4 steps
1. Upload a file (mp3, wav, m4a, ogg) — a waveform appears.
2. Drag the start/end markers on the waveform or type the exact time in seconds.
3. Hit "segment" — a playhead moves across the waveform so you hear exactly what is selected.
4. Pick a format (MP3 128/192/320 or WAV) and click "Build & download".
How to join several pieces
Add several files at once — each becomes its own clip in the list. Trim each one, reorder them with the arrows, and duplicate a piece when needed (to slice one track into parts and rearrange them). On build all clips are joined back-to-back into a single file, with smooth transitions if you enable fades.
Formats and quality
Input: mp3, wav, m4a, ogg (flac where the browser supports it).
Output: MP3 128/192/320 kbps or WAV 16-bit with no re-compression.
The output name comes from the original: track_cut.mp3.
The fastest way
Our free Audio Cutter does all of this in a couple of clicks right in the browser: load audio, cut on the waveform, join pieces and download as MP3 or WAV. Processing runs on the Web Audio engine on your device, and the file never leaves it.
✂ Audio Cutter — free
Cut and join mp3, wav and other formats right in the browser, nothing uploaded.
Also need to convert WAV to MP3 or clean up the sound? See the neighbouring free Lab tools.
FAQ
How to cut mp3 online?
Upload a file, drag the two markers — start and end — right on the waveform (or type the time in seconds), preview the segment and click "Build & download". The finished mp3 is built in your browser and downloads instantly.
Can I join several pieces into one track?
Yes. Add several files — each becomes a clip in the list. Reorder them, duplicate and trim each one; on build all pieces are joined into a single file in order.
Is it free and private? Is the file uploaded?
Fully free, no limits, no watermarks. Nothing is uploaded — trimming and joining run locally in your browser, the audio never leaves your device.
Which formats are supported?
Input: mp3, wav, m4a, ogg (flac in some browsers). Output: MP3 (128, 192 or 320 kbps) or 16-bit WAV. Smooth fade-in and fade-out included.
Will the mp3 quality drop?
Trimming itself does not hurt the sound. When exporting to MP3 pick 320 kbps for top quality; WAV has no re-compression at all.