Free Audio Trimmer

An audio trimmer removes the parts of a recording you don’t want and keeps the section you choose. This one takes the part you mark on the waveform, or a start and end time in seconds, and exports that section as a new MP3. Your original file is left unchanged.

1. Click Choose files and select your audio or video. 2. Drag across the waveform to mark the part to keep, or enter Start and End in seconds. 3. Click Process audio and wait for the progress bar. 4. Play the result and click Download.

No. The file is read by FFmpeg running inside your browser, and the trimmed MP3 is created on your device. The only download is the FFmpeg engine itself, fetched from a public CDN the first time and then cached by your browser.

The trimmer is free and adds no audio watermark or intro. Each file can be up to 100 MB and 10 minutes long. There’s no daily cap on how many files you trim.

It’s always MP3, encoded at 192 kbps, 44.1 kHz and stereo, which plays on almost any device. If you need WAV, convert the trimmed MP3 with the audio converter.

Yes. Choose an MP4, MOV or WebM video with sound and set the times as usual. The picture is dropped and only the selected sound is saved as MP3.

The fields take seconds only. Multiply the minutes by 60 and add the seconds, so 2:15 becomes 135. Decimal values such as 135.5 give you finer control. You can also skip typing and drag across the waveform instead.

Check that End is larger than Start and that both are numbers. Errors also appear if the file is over 100 MB or 10 minutes, has no audio track, or can’t be decoded. A weak connection can interrupt the first engine download, so check it and try again.

It runs in current mobile browsers, including Safari on iPhone and Chrome on Android. Processing uses your device’s memory and processor, so long files are faster and more reliable on a computer.

Not in one pass. Trim each section separately and download each MP3, then put them together in the order you want with the audio joiner.