Audio Trimmer

Cut a section from any audio file by listening and marking start and end — with optional fades, saved as MP3 or WAV.

Runs in your browser. Files and text you add here are processed on your own device with JavaScript and are not uploaded to our server. Some tools download a free open-source library (for example PDF.js or QPDF) from a public CDN the first time you use them. Very large files depend on your device's memory.

You need 30 seconds of a song for a ringtone, the useful ten minutes of a two-hour meeting recording, or a voice note without the fumbling at the start. Opening Audacity for that is overkill; uploading a private recording to a website is worse.

This trimmer cuts audio in your browser. Play the file, pause where you want the cut, and press “Set start” and “Set end” — or type exact times like 1:05.5. Add an optional fade-in or fade-out and save as MP3 or WAV.

The cut is sample-accurate because it works on decoded audio, not on MP3 frames, so there are no clicks or skipped half-seconds at the edges.

It is deliberately a one-job tool: one file, one selection, one output. That makes it quick on a phone as well as a laptop, and there is nothing to learn beyond play, pause and set.

How It Works

  1. Open a file — MP3, WAV, M4A, OGG, OPUS, FLAC or WebM audio. It is decoded once, and a player appears with the full length shown.
  2. Choose the section — use the player with “Set start/end = current position”, or type times in m:ss format. “Preview selection” plays just the part you'll keep.
  3. Render and save — an OfflineAudioContext renders only the selected range, applies linear fades if chosen, and the result is encoded to MP3 or WAV.

Compatibility & Support

Supported Input → Output Formats

  • Input: MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WebM audio
  • Output: MP3 (48–320 kbps) or 16-bit WAV
  • Extras: fade in / fade out of 0.5–3 seconds

Unsupported Formats

One continuous section per export — to remove a piece from the middle, export the two parts separately. Video files aren't trimmed here; extract their audio first with Video to MP3. Decoding uses your browser's built-in codecs. Chrome and Edge read MP3, WAV, AAC/M4A, OGG Vorbis, Opus, FLAC and WebM audio; Firefox is similar but has no AAC on some Linux systems; Safari reads MP3, AAC/M4A, WAV, FLAC and, from recent versions, Opus.

File Size Limits

One file at a time, up to 300 MB. Long recordings are decoded into memory in full, so a two-hour file needs a desktop browser with a few gigabytes of free RAM.

The trimmed file is usually tiny by comparison: a 30-second MP3 clip at 192 kbps is about 700 KB, small enough for any messaging app, and a 10-minute excerpt of a meeting at 96 kbps mono is roughly 7 MB — comfortably inside email attachment limits.

Who Should Use This Tool?

  • Students: A student cuts the relevant 12 minutes from a recorded lecture to share with a study group.
  • Freelancers & Designers: A video editor trims a licensed music track to 15 seconds with a 2-second fade-out for a social ad.
  • Office Professionals: A journalist trims a 40-minute interview recording down to the two-minute quote they need before sending it to an editor for fact-checking.
  • Developers: A developer cuts precise sound-effect clips from a longer WAV for an app's notification sounds.

Key Features / Khusoosiyat

Here's what separates this tool from generic alternatives:

▶️

Set From Playback

Pause at the right moment and set start or end with one click.

⌨️

Exact Times

Type times down to tenths of a second.

🎧

Preview First

Listen to just the selection before saving.

🌅

Fades

Optional fade-in and fade-out for smooth edges.

🎯

Sample-Accurate

Cuts decoded audio, not MP3 frames — no clicks.

🔒

Private

Recordings are processed on your device only.

Why This Tool Beats the Alternatives

  • No upload of private recordings.
  • Faster than launching a full audio editor for a single cut.
  • Works on phones with the built-in player controls.
  • Free, with no length limit or watermark jingle.
  • Clean fades that many simple trimmers lack.

Pro Tips

  • For iPhone ringtones, keep the clip under 30 seconds and use GarageBand or Finder to add it; Android accepts MP3 directly.
  • Leave a few hundred milliseconds of silence at the start of speech clips so the first word isn't clipped by players, and set the end just after the last word fades rather than exactly on it.
  • Choose WAV if you will edit the clip further; MP3 for sharing.

Open your audio file above, mark the part you want, and download the trimmed clip.

Frequently Asked Questions