Cut audio online without uploading it
This tool trims the start and end of an audio file. It reads MP3, WAV, M4A, OGG and most other formats your browser can play, shows the waveform so you can see where the talking or the music starts, and lets you set the cut points by dragging or by typing exact times. Everything runs in your browser tab, so even large or private recordings never leave your device.
- Voice memo: remove the seconds of fumbling with the phone at the start and the silence at the end before you send it on.
- Ringtone: cut the chorus of a song to about 20 to 30 seconds and add a short fade in and fade out.
- Podcast and video clips: cut out a quote or a sound effect to use in another project.
- Sound from a video: drop an MP4 and keep only the audio of the part you need.
Fades, volume and file size
A hard cut in the middle of a sound can click. A fade of half a second to two seconds at the start and end makes the clip begin and end smoothly; for speech, 0.1 to 0.3 seconds is usually enough. Use the volume slider or Normalize when the recording is too quiet. Normalize looks at the loudest moment in your selection and raises the whole clip until that moment sits at -1 dB, so nothing distorts.
The result is a 16-bit WAV file at the sample rate your browser decodes to, usually 44.1 or 48 kHz. That is CD quality and needs roughly 10 MB per minute in stereo or 5 MB in mono. Choose Mono for speech to halve the size. The estimated size updates as you move the handles.
How to trim audio
- 1Drop an audio or video file on the box, or choose it from your device.
- 2Drag the start and end handles on the waveform, or type the times. Press Play selection to check the cut, with Loop on to hear the transition.
- 3Add a fade in or fade out and adjust the volume if needed, then press Download WAV.
Frequently asked questions
Is my audio uploaded?
No. Your browser opens the file, draws the waveform and writes the trimmed WAV on your own device. Nothing is sent to a server, so private voice memos and unreleased songs stay with you.
Why do I get a WAV file and not an MP3?
Browsers can read MP3 but have no built-in way to write it. WAV is lossless, so the trimmed part sounds exactly like the original, but it is larger, about 10 MB per minute in stereo. If a site insists on MP3, convert the WAV afterwards with any audio converter.
Which files can I open?
Anything your browser can play: MP3, WAV, M4A and AAC, OGG, Opus, FLAC and WebM in most browsers. You can also drop a video file such as an MP4 and trim its sound. If a file does not open, try another browser; Safari, Chrome and Firefox support slightly different formats.
How do I make a ringtone?
Trim the part you want, usually a catchy 20 to 30 seconds, and add a short fade in and fade out so it does not start or stop abruptly. Android phones accept WAV files as ringtones. On an iPhone, ringtones are made in GarageBand, which can import the WAV file.
What does Normalize do?
Normalize turns the volume of the trimmed part up or down so its loudest peak sits just below the maximum, at -1 dB. Quiet recordings get louder without clipping. The volume slider does the same by hand, in decibels.