Trim Audio
Trim Audio works as a free MP3 cutter online — cut any MP3 in your browser, with no upload and no sign-up.
Most audio files have something you do not need: silence at the start of a voice note, a long intro on a song recording, or a mistake at the end of a podcast take. This free Trim Audio tool cuts an audio file down to just the part you want. It draws the sound as a waveform picture, so you can see loud and quiet sections at a glance, then you drag two sliders to mark where the kept section starts and ends.
The greyed-out parts of the waveform are what will be removed, and the clear middle section is what you keep. Before downloading, press Play Selection to hear exactly the piece you have marked, played directly from the original file. When you are happy, the download button exports your selection as a WAV file. WAV is uncompressed, so the exported clip keeps the full quality of the original recording with no extra compression damage. The trade-off is that WAV files are larger than MP3s, which is worth knowing if you plan to share the clip on a slow connection.
Your audio is processed entirely in your browser. The file is never uploaded to a server, so private voice notes, interviews, and unreleased music stay on your device. Trimming works with the formats your browser can decode, which normally includes MP3, WAV, OGG, and M4A. Chrome and Edge handle all of these reliably; if a very unusual file will not load, converting it to MP3 or WAV first almost always solves the problem.
How to use
- Click the file box and choose the audio file you want to trim.
- Wait for the waveform to appear; tall spikes are loud sounds, flat parts are quiet.
- Drag the Start slider to where the part you want begins.
- Drag the End slider to where it should finish.
- Press Play Selection to listen to exactly what will be kept.
- Adjust if needed, then click Download Trimmed WAV to save it.
Frequently asked questions
Is my audio file uploaded anywhere?
No. The file is decoded and trimmed inside your browser on your own device. Nothing is sent to a server, and the original file on your device is never changed.
Why does the download come out as WAV instead of MP3?
Browsers can write WAV files directly but cannot encode MP3 without extra software. WAV keeps perfect quality, and if you need a smaller MP3 afterwards, you can convert the WAV with any audio converter.
How precise is the cut?
The sliders move in tenths of a second, which is precise enough for removing silences, intros, and mistakes. For sample-exact editing inside a song, a desktop audio editor gives finer control.
Why will my file not load?
The tool can only open formats your browser knows how to play, such as MP3, WAV, OGG, and M4A. Rare or damaged files may fail; converting the file to MP3 or WAV in another app first usually fixes it.
Is this an MP3 cutter?
Yes — load an MP3, drag to select the part you want to keep, and export it. Your audio never leaves your browser.