Audio Cutter
Cut a precise section out of any audio file with a visual waveform guide, optional fades and sample-accurate start and end points.
Convert with this tool
or choose a file from your device — it is processed in this tab and never uploaded
Accepted: MP3, WAV, FLAC, M4A/AAC, OGG, Opus and video files
Files stay on your device. There is no upload, no queue and no watermark, so a conversion works even with the network switched off after the page has loaded.
Supported formats & processing
| Accepted input | MP3, WAV, FLAC, M4A/AAC, OGG, Opus and video files |
|---|---|
| Produced output | MP3, WAV, FLAC or M4A containing just the selected section |
| Processing | Web Audio API + canvas + native JavaScript encoders |
| Upload required | No — the file is read locally and never transmitted |
How to use this tool
- Add the file and look at the waveformQuiet sections appear as thin bars, loud ones as tall spikes — that is your map of the recording.
- Type the start timeThe maximum is set to the real duration of the file as soon as it decodes.
- Type the end timeThe default is the first 30 seconds; set it to wherever the section should stop.
- Add short fadesA 20–50 ms fade in and out removes the click that a hard cut can produce.
- Convert and previewListen to the excerpt in the result card before downloading.
About this tool
Cutting audio is the most common editing task there is: take the good take, drop the false start, pull a ringtone out of a song, or extract the one useful minute from an hour-long recording. Doing it well means seeing where to cut.
This page draws the real waveform of your file as soon as it is added, so you can see exactly where the quiet gaps and the loud passages sit, and it lets you set start and end times to a tenth of a second. Everything is applied during an offline render, so the cut points are honoured precisely and fades are calculated rather than guessed.
Features
- Real waveform drawn from the decoded audio, not a random graphic
- Start and end times honoured to a tenth of a second
- Optional fade in and fade out to avoid clicks at the cut points
- Live duration display so you always know what you are cutting
- Output as MP3, WAV, FLAC or M4A
- Nothing is uploaded, so unpublished audio stays private
Frequently asked questions
Can I cut an MP3 without re-encoding?
Not precisely. Frame-accurate cutting requires decoding and re-encoding, which is what this tool does. Frame-boundary cutting without re-encoding is possible but can only land on MP3 frame boundaries, roughly every 26 ms, and it is what the video cutter's stream-copy mode does for video.
Why do I hear a click at the start of my cut?
A hard cut through a non-zero sample creates a step, which the ear hears as a click. Add a 20–50 ms fade and it disappears.
How do I find the exact time to cut at?
Use the waveform: locate the flat gap you want and read the duration figure printed underneath. Then set your start and end a little inside that gap.
Does the cut affect quality?
One re-encode does, slightly. Encode to WAV if you plan further editing, and to MP3 only for the final delivery copy.