Free Audio Trimmer

The Audio Trimmer is a free online tool that trim audio files to any start and end point. preview and download as wav. It runs entirely in your browser with no installation or sign-up needed.

Trimming is accurate to milliseconds using the Web Audio API.

Yes — play the trimmed section before downloading.

Yes, completely free.

Absolutely. The Audio Trimmer processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Audio Trimmer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Audio Trimmer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Audio Trimmer works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

This trimmer always exports a WAV file because WAV is uncompressed PCM, so the cut is lossless and no re-encoding artifacts are added on the way out. MP3 is a lossy format, and re-encoding a clip back to MP3 would degrade quality slightly and require a separate compression step. The trade-off is file size: because WAV stores raw audio, the download is larger than an equivalent MP3 of the same clip. If you specifically need a small MP3 — for a ringtone or a quick share — trim here first to get a clean, lossless cut, then run the resulting WAV through an audio converter afterward. For archiving, editing further, or any case where fidelity matters, the WAV output is the better starting point. Load a track above to make your cut.

The export is always rendered to a single mono channel, so if your source is stereo the left and right channels are averaged together into one. This is intentional and ideal for voice clips, spoken-word quotes, voice memos, and most short samples, where two channels add size without much benefit. The downside is that a true stereo mix — music with instruments panned left and right, for example — loses its spatial separation when collapsed to mono. If preserving stereo imaging is essential for your project, you'll want a dedicated audio editor for that step. For trimming podcasts, lectures, interviews, or a quick ringtone, mono keeps the file lean while staying sample-accurate down to the millisecond. Load your file above, set your start and end points, and preview before you download.

Both methods set the same trim region and stay in sync, so you can switch between them freely. Dragging the handles on the rendered waveform is the visual approach: you can see the audio, line up a handle with a beat or a pause, and grab roughly the right spot quickly. Typing values into the Start Time and End Time fields is the precise approach — they accept seconds with a step of 0.01, letting you set points to a hundredth of a second (10 milliseconds) for frame-accurate edits. A common workflow is to drag to get close, then type to fine-tune the exact boundary. A running readout shows the trim duration against the full track length the whole time. Load an audio file above and use whichever method fits the cut you're making.

You can load common formats including MP3, WAV, OGG, and AAC. The tool decodes your file using the Web Audio API, so in practice it accepts whatever audio your browser's built-in engine can decode — support can vary slightly between Chrome, Firefox, and Safari for less common codecs. Once the file is decoded, its waveform is rendered on screen so you trim against the actual audio rather than guessing at timestamps. Whatever format goes in, the trimmed clip always comes out as a lossless WAV. Because the file is processed entirely on your device, there's no upload size cap from a server quota; the practical limit is your device's available memory, since the whole file is decoded in the browser. Drop or select an audio file above to see its waveform and start setting trim points.

Yes — the sample rate of your source is preserved in the export, so a 44,100 Hz file stays at 44,100 Hz and a 48,000 Hz file stays at 48,000 Hz. Nothing is resampled, which keeps the trimmed clip faithful to the original recording's resolution. What does change is channel count: the output is always mono, and stereo sources are averaged into one channel. The downloaded file is named after your original with a "_trimmed" suffix added, so it's easy to tell the clip apart from the full-length source in your downloads folder. Combined with the lossless WAV format and millisecond-accurate cut points, this means you get a clean excerpt without surprise quality changes. Load a track above, set your start and end times, preview the selection, and download your trimmed clip.