Audio Trimmer — Free Online Tool

The Audio Trimmer cuts an MP3 or other audio file down to a selected section, letting you set start and end points and export just that portion. It decodes the audio with the Web Audio API in your browser and re-encodes the selected range, so there is no upload, no queue, and no account.

Trimming is the operation people need far more often than full audio editing: removing dead air and throat-clearing from the start of a recording, isolating a quote from a long interview, cutting a ringtone or a notification sound out of a track, shortening a podcast segment for a social clip, or extracting the section of a lecture recording that covers a single topic.

Two practical details. First, trimming with sample-level precision matters at the boundaries — a cut placed mid-word or mid-beat is obvious to a listener, so nudging the start point to a silence or a beat boundary is usually worth the extra few seconds. Second, a hard cut at a non-zero amplitude produces an audible click, because the waveform jumps instantly to silence; a very short fade at each edge removes that entirely and is the single easiest way to make a trimmed clip sound deliberate rather than chopped.

Everything happens locally in your browser, which matters for interview recordings, voice notes, and unreleased audio that should not be sitting on someone else's server.

Our Audio Trimmer is completely free to use with no signup required. For this tool, processing runs in your browser — your files and data stay on your device and are not uploaded to our servers.

Whether you are a developer, designer, student, or business owner, this tool is designed to save you time and make your workflow more efficient. Bookmark this page to access it whenever you need it — it will always be free.