Trim an MP3
Voice memos with a minute of pocket noise, a lecture where the useful part starts at 12:40, a song snippet for a project. Cutting audio is a ten second job once you can see the waveform.
Drop the MP3 and the waveform renders locally. Set the range by dragging or typing exact times, preview just the selection, and export. The cut is sample-accurate, and the output's duration is verified against what you selected.
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This is Trim Audio preconfigured for this task — open the full tool for every option.
How it works
Select an audio file; a waveform renders locally.
Set start and end points on the waveform or with time fields.
The selection is cut sample-accurately from the decoded audio.
Export WAV or WebM/Opus; duration is verified before download.
What the tool does
- Local waveform rendering
- Sample-accurate cutting (no re-encode needed for WAV output)
- Preview the selection before exporting
- WAV and WebM/Opus output
How the result is verified
The exported audio is re-decoded and its duration compared with your selected range within a few milliseconds.
Frequently asked questions
Why can't I get an MP3 back out?
No browser ships an MP3 encoder, and doing it honestly means saying so rather than uploading your audio to a server that has one. WAV preserves the trimmed audio bit-perfectly, and anything can convert WAV to MP3 later if a destination insists.
How precise is the cut?
Sample-accurate for WAV output, meaning the cut lands exactly where you set it, not at the nearest second. The verification step re-decodes the output and checks its duration against your selection.