MP3 Trimmer — Free Online MP3 Cutter, No Signup
Cut and trim MP3 audio with precise start and end times free online. Sample-accurate, in-browser, no upload, no signup.
How to trim an MP3
Drop an MP3 file.
Set start and end times in mm:ss format. Leave end blank to trim from start to the end of the file.
Click Trim. The trimmed audio is built in your browser.
Download the trimmed MP3.
Common use cases
Trimming silence from the start or end of a recording before publishing it as a podcast episode or sharing it as a sample.
Picking a short ringtone or notification sound out of a longer track and saving just that segment as its own MP3.
Removing an unwanted intro or outro from a downloaded track without re-encoding the rest of the audio (preserving the original bitrate and quality).
How it works
Drop your MP3 in. The waveform is rendered locally so you can see where the audio peaks are and choose your start and end points visually.
Drag the start and end markers (or type exact timestamps) to define the segment you want to keep. The trimmer is sample-accurate.
Click trim. The selected portion is saved as a new MP3 with the same bitrate as the source, while the original file on your device is left untouched.
Privacy by design
We built this tool to demonstrate that powerful file utilities do not require sending your data to a remote server. Every byte stays on your device.
Hosting and bandwidth aren't free, so the site is supported by privacy-respecting display advertising. Ads never have access to your files because the ads run in a separate iframe and the files never leave your browser memory in the first place.
You can opt out of personalised advertising at any time via the cookie banner at the bottom of the page. Functional behaviour of the tools does not change based on your consent — it only affects the type of ads displayed.
Frequently asked questions
Is it really free?
Yes. There are no fees, no monthly limits, and no premium tier. The tools are funded by display advertising.
Are my files private?
Completely. Everything runs in your browser. We don't have a server that sees your files.
Will it work on my phone?
Yes. Every tool is responsive and works on iOS Safari and Android Chrome. Some heavy operations (large videos, complex PDFs) may be slow on older devices because the work happens locally rather than on a server.
Do I need an account?
No. Tools work immediately, with no signup or login.
Can I use it for commercial work?
Yes. There are no restrictions on the type of file you process or what you do with the result, beyond not violating the law or our Terms of Service.
Where can I report a bug or request a feature?
The Contact page lists an email address — we read every message and try to respond within a couple of business days.