MP3Conv

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Trim & Cut MP3

Set start and end with a slider, preview, then export — sample-accurate trimming with no quality loss.

About the MP3 trimmer

Cut a clean section from any MP3 or audio file. The trimmer uses stream copy whenever possible, so the output keeps the exact original quality of the input — no re-encoding required.

Use it to chop ringtones, remove silence at the start of a recording, isolate a chorus, or pull a clip out of a longer file. We don't analyse or index your file.

How to trim an MP3 online

  1. 01

    Load your file

    Drop in the audio you want to trim. The waveform and duration appear instantly.

  2. 02

    Pick start and end

    Drag the start and end sliders to set the section you want to keep.

  3. 03

    Export the clip

    Click trim and download the cut section. The original is never modified.

Why use this MP3 trimmer

  • Lossless trimming — no re-encoding when possible
  • Sample-level precision with second-by-second control
  • Instant preview with the built-in audio player
  • Works with MP3, WAV, FLAC, M4A, OGG, OPUS, AAC
  • Free and private — we don't analyse or index your files
  • No watermarks, no signups, no length limits

Trimmer FAQ

Will trimming reduce my audio quality?

No. The trimmer uses lossless stream copy where the format allows it, so the exported clip is bit-identical to the matching segment of the original.

Can I trim more than once?

Yes. Trim, download, then drop the file in again to make another cut. The tool resets in one click.

What audio formats are supported?

Common audio formats — MP3, WAV, FLAC, OGG, OPUS, AAC, M4A, AIFF and more.

Is there a maximum length?

There is no length limit beyond what available memory can hold. Most files of any reasonable length work fine.

Cut, join, trim, fade

See all edit tools