Trim and Cut Audio
Keep the parts you want, or cut bits out — with the waveform to guide you.
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or drag it here
MP3, M4A, WAV, FLAC, or OGG
- Takes
- MP3, M4A, AAC, WAV, FLAC, OGG, and Opus, plus the sound from MP4, MOV, WebM, or MKV videos. One file at a time. AIFF and WMA don’t work in a browser.
- Size
- No limit. Drawing the waveform takes about a second and a half for a 12-minute MP3; longer recordings just take a bit longer.
Your files stay on your device
How to use it
Drop an audio file here, drag across the waveform to select a part, then keep it or cut it out. Click anywhere to listen. Your file stays on your device.
Drop your audio file onto the box above and you’ll see its waveform — a picture of the sound. Quiet gaps, applause, and dead air are easy to spot, so you can cut in exactly the right place.
Drag across the waveform to select a part. Drag the edges to fine-tune, or type exact times. Click anywhere to listen from that point, and use each section’s play button to check it.
Choose “Keep selected” to save only the parts you marked (great for pulling a few clips out of a long interview), or “Remove selected” to cut them out and keep the rest (great for removing ads, mistakes, and long silences). The dark part of the waveform is always what you’ll get.
Marked several sections? Save them as one joined MP3, or as separate files, numbered in order.
FAQ
Can I cut a bit out of the middle?
Yes. Mark it and switch to “Remove selected”. The rest is joined together.
Can I keep several separate parts?
Yes. Mark them all and leave it on “Keep selected”. Save them joined, or as separate files.
Can I split one recording into several files?
Yes. Mark each piece and choose separate files. They’re named part-1, part-2, and so on.
How do I hear a particular moment?
Click that spot on the waveform.
Does trimming lower the quality?
Very slightly, since the clip is saved again. Leave the quality on its default to keep it unnoticeable.
Which formats work?
MP3, M4A, AAC, WAV, FLAC, OGG, and Opus, plus the sound from MP4, MOV, WebM, and MKV videos. You get an MP3 back.
How it worksFor the curious
The file is decoded once into a waveform of a couple of thousand peak pairs — about 1.5 seconds for a 12-minute MP3. Playback uses your browser’s own player on the original file, clamped to the range, so auditioning costs no processing.
Cutting re-encodes. Compressed audio is stored in frames, and finding an arbitrary moment means decoding to it; the kept pieces must then be written back as valid frames. That is one generation of loss even though the format is unchanged, so the bitrate defaults to your file’s own.
Kept sections are butted together with no crossfade, so a cut mid-word still sounds like a cut. Saving as separate files restarts the encoder at each boundary, naming files -part-1, -part-2, and so on. Time fields accept tenths of a second; MP3 frames are about 26 ms, the practical floor for a boundary.