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Toolzum

Audio Cutter

Trim and cut audio files online — MP3, WAV, M4A, FLAC, and OGG. Set start and end times with sliders, then download the trimmed MP3 clip. Audio never leaves your device — conversion and editing run locally in your browser with FFmpeg WASM.

Runs on FFmpeg

100% Local Browser Native

How to Use the Audio Cutter

1. Upload an audio file

MP3, WAV, M4A, OGG, AAC, or FLAC — processed locally.

2. Set start and end times

Move the sliders in 0.5-second steps; the clip length updates live.

3. Cut and download

Save the trimmed clip as MP3 (downloads are unlimited).

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Frequently Asked Questions

How do I select the exact part of the audio to keep?

Move the Start Time and End Time sliders in 0.5-second steps to set your trim points — the final clip length updates live above the Cut Audio button.

Does cutting the audio reduce its quality?

The selection is re-encoded as MP3 through FFmpeg in your browser, so a generation of lossy compression applies — keep your masters. For critical edits, cut once from the original.

What audio formats can I cut?

Upload MP3, WAV, M4A, OGG, AAC, or FLAC; the trimmed clip always downloads as MP3 named trimmed_<name>.mp3.

How precise are cuts?

Half-second steps on files of any length your browser can load — the end point defaults to the first 10 seconds, or the full duration if the file is shorter.

Is there a minimum or maximum length I can trim to?

Cuts can be fractions of a second (0.5 s steps) as long as end stays after start. There is no maximum — the tool handles files of any length your browser can load into memory.

Last updated October 2026