Audio Trimmer & Cutter

Trim and cut audio files to a start and end time, then export as MP3. MP3, WAV, M4A, and more. Runs entirely in your browser — nothing is uploaded.

Runs in your browser — nothing uploaded

Cut an audio file down to just the part you want and save it as an MP3 — without uploading anything. This trimmer runs ffmpeg directly in your browser, so your file is processed on your own device. Set a start and end time, preview the result, and download a clean clip.

Private by design — your data never leaves your device

How to use it

No account, no upload — it all happens on your device.

1
Drop an audio file onto the box, or click to choose one.
2
Enter the start time, and an end time (or leave it blank for the end).
3
Click Trim audio and wait for the progress bar.
4
Preview the clip, then download the MP3.

Why trim audio in the browser

A local cutter keeps recordings private and skips upload limits.

  • Your audio stays private. Voice memos, interviews, and music never touch a server — nothing is uploaded and nothing to delete.
  • No upload size caps.You are limited by your device's memory, not a website's upload limit.
  • Works offline. Once the engine has loaded once, it keeps working with no connection.

Tips for clean cuts

Enter times as seconds (30, 5.5) or as m:ss (1:30). Leave the end time blank to keep everything after your start point. For a ringtone or sample, aim for a clip under 30 seconds. The output is re-encoded to MP3 at 192 kbps, a good balance of quality and size.

Frequently asked

Is my audio uploaded to a server?
No. Trimming runs entirely in your browser using ffmpeg compiled to WebAssembly. Your audio is read directly from your device and never uploaded anywhere.
What format is the output?
The trimmed clip is exported as a 192 kbps MP3, which plays everywhere. You can trim from MP3, WAV, M4A, AAC, OGG, FLAC, and other common audio formats.
How do I enter the times?
Use seconds (like 30 or 5.5) or minutes and seconds (like 1:30). Leave the end time blank to trim from your start point all the way to the end of the file.

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