Quick answer
To cut an MP3 online for free, open MP3 Cutter, drop your audio file, drag the two handles on the waveform to the part you want, optionally add a fade in or fade out, then click “Cut & export”. The trimmed MP3 is created in your browser in seconds — nothing is uploaded.
How to use the MP3 Cutter
- Open your audio fileDrag an MP3, WAV, M4A, OGG or FLAC file onto the page or tap “Choose audio file”.
- Select the part to keepDrag the start and end handles on the waveform, or type exact times like 01:23.50.
- Polish itAdd fade in / fade out, adjust volume or speed, and press Preview to listen.
- Export and downloadChoose MP3 (128–320 kbps) or WAV and click Cut & export, then Download.
Why this MP3 cutter is different
Most online audio cutters upload your file to a server, make you wait in a queue and then compress it again. MP3 Cutter does all the work locally in your browser. That means:
- Instant — a 5-minute song is decoded in about a second on a modern phone.
- Private — interviews, voice memos and unreleased tracks never touch the internet.
- Unlimited — no file-size cap imposed by an upload server; the only limit is your device memory.
- Precise — 10-millisecond time inputs and ±0.1 s nudge buttons for frame-accurate cuts.
MP3 Cutter vs. other ways to trim audio
| MP3 Cutter (browser) | Upload-based sites | Desktop editors (Audacity) | |
|---|---|---|---|
| Install required | No | No | Yes |
| File uploaded | Never | Yes | No |
| Typical time to trim a song | < 30 s | 1–3 min | 2–5 min |
| Fade in / out, volume, speed | Yes | Sometimes | Yes |
| Works on phones | Yes | Partly | No |
| Price | Free | Free / paid tiers | Free |
Supported formats
MP3 Cutter opens anything your browser can decode: MP3, WAV, M4A/AAC, OGG Vorbis, Opus, FLAC, WebM audio, AIFF and the audio track of most MP4 videos. It exports MP3 (128, 192, 256 or 320 kbps CBR) or lossless 16-bit WAV. Tip: if you plan to edit the clip again later, export WAV to avoid re-compression losses.
Everything you can do
Cut & trim
Sample-accurate cuts with draggable handles and millisecond time inputs.
Remove a section
Delete the middle of a recording and join the rest seamlessly.
Fade in / out
Smooth 0–10 s fades so clips never start or end with a click.
Volume & speed
Boost quiet audio up to 300% and change tempo from 0.5× to 2×.
Private by design
Runs entirely in your browser. Files are never uploaded or stored.
Instant export
MP3 encoding in a background thread — the page never freezes.
Frequently asked questions
How do I cut a part out of the middle of a song?
Select the unwanted part on the waveform and switch the mode to “Remove selection”. The parts before and after are joined seamlessly when you export.
Will cutting reduce the audio quality?
Exporting to MP3 re-encodes the audio. At 192 kbps or higher the difference is inaudible for most listeners. Choose WAV for a lossless result.
What is the maximum file size?
There is no fixed limit because nothing is uploaded. Files up to a few hundred MB (several hours of audio) work on most laptops; phones handle around one hour comfortably.
Is MP3 Cutter really free?
Yes. Every feature — cutting, fading, volume, speed and MP3/WAV export — is free with no sign-up, no watermark and no daily limit. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. Your audio is decoded and processed entirely inside your browser using the Web Audio API and an MP3 encoder that runs locally. The file never leaves your device, so it works even for private recordings.
Does it work on iPhone, Android and Chromebook?
Yes. MP3 Cutter runs in any modern browser — Safari on iPhone/iPad, Chrome on Android, Chrome OS, Windows, macOS and Linux. No app install is required.
Last updated · by MP3 Cutter Team