MP3 cutter online
Cut the part you need out of a song, or pull the music out of a video. Mark the start and end on the waveform, listen to the selection, and add a fade in and fade out if you like. Everything runs in your browser.
Drag a file here or click to select
MP3, WAV, OGG, M4A, or video. The file stays on your device
An MP3 cutter that keeps the file on your machine
The audio is decoded in the tab, the waveform is drawn from the decoded samples and the trimmed file is written on your own device, so a long voice memo never sits in a queue behind other people's jobs. Files above 2 GB are refused because a tab cannot hold them in memory, and past 500 MB on a computer or 300 MB on a phone you get a warning first.
Marking the section by eye and by ear
The waveform is the peak level of each column of pixels, which makes gaps between verses, applause and dead air visible before you hear them. Drag the two handles to bracket the part you want and press play to listen to exactly that range: the playhead moves across the selection and the regions outside it are dimmed, so you can nudge a boundary and check it again without exporting anything. If your browser can't decode the codec, the waveform stays blank and the cut still works.
Fade in, fade out and the slower FFmpeg path
Music rarely ends on a silent frame, so a hard cut tends to click. The fade boxes ramp the volume over two seconds at each end, or over half the selection when it is shorter than four seconds. The fast path can't do a fade, and ticking either box routes the job through a WebAssembly build of FFmpeg that weighs around 30 MB and downloads once. Cutting a dozen clips that don't need the ramp? Leave both boxes alone and every run stays on the quick route.
Ringtones, podcast clips and sound from video
The two common jobs are a 30 second ringtone and a quotable clip from an interview, and both are the same three steps. Video files load here directly, so you can cut a line out of an MP4 without converting it first, though video to MP3 is the better route when you want the entire soundtrack. To put a finished track back over footage, use add music to video, and to shorten the video itself rather than its audio, the video trimmer can cut without re-encoding.
Frequently asked questions
How do I cut an MP3 online?+
Drop the file in and the page draws its waveform. Drag the two handles to the part you want, press play to check the selection by ear, then click Trim and download it as MP3 or WAV.
Can I cut the music out of a video?+
Yes. The tool takes video files as well as audio ones. Load an MP4 or MOV, mark the section, and what you get back is the sound alone. The picture is dropped, so a two minute selection from a 300 MB clip becomes a file of a couple of megabytes.
What do the fade checkboxes do?+
They ramp the volume up at the start and down to silence at the end, so a cut that lands mid-note does not click. Each fade runs for two seconds, or half the selection when the selection is shorter than four seconds. Both are optional and off by default.
Why does the job take longer when I tick a fade?+
The fast path cannot apply a volume ramp, so a fade sends the job to a WebAssembly build of FFmpeg instead. That engine is about 30 MB and downloads the first time you use it, then stays cached. Cuts without fades skip it entirely.
MP3 or WAV, and which formats can I load?+
Load MP3, WAV, OGG, M4A or any video file. Save as MP3, which suits listening and sharing, or WAV, which is uncompressed at roughly 10 MB per minute and is what an editor prefers. A one minute ringtone as MP3 is about a megabyte.
Is the file uploaded to a server?+
No. Decoding, the waveform, the preview and the export all run inside your browser tab, which is also why there's no sign-up and no limit on how many files you cut.