Audio

Audio Trimmer Online

Trim audio online without uploading your file. Choose a start and end time for MP3, WAV, OGG or M4A audio, preview the clip, and download the trimmed result as WAV.

Click to upload or drag and drop an audio file here (MP3, WAV, OGG, M4A)

How to trim audio online

  1. Upload an MP3, WAV, OGG, M4A or another audio format your browser can decode.
  2. Listen to the file, then enter the exact start and end time in seconds.
  3. Click Trim audio, preview the new clip, and download the result as a WAV file.

Features

  • Cut MP3, WAV, OGG, M4A and other browser-decodable audio
  • Choose start and end points with 0.1-second precision
  • Preview both the original and trimmed audio before downloading
  • Runs entirely in your browser via the Web Audio API — no file upload or sign-up

What can you use this audio cutter for?

Use the trimmer to remove silence or unwanted intros and outros, create a short clip from a voice note or recording, isolate part of an interview or podcast, or prepare a smaller audio segment for another project.

Supported audio formats and WAV output

Common inputs such as MP3, WAV, OGG and M4A work when your browser can decode them. The trimmed result is exported as WAV because browsers do not provide a built-in MP3 encoder. WAV is widely supported, but it can be larger than the source MP3 or M4A file.

Private audio trimming in your browser

Your audio is decoded and trimmed locally on your device with the Web Audio API. ToolNova does not upload the file to a server for this tool, so you can cut audio without sending the recording away from your browser.

Frequently asked questions

This tool decodes audio using your browser's Web Audio API and re-encodes the trimmed result as WAV, since browsers don't include a built-in MP3 encoder. WAV is uncompressed and plays everywhere, though the file will be larger than an MP3.

No hard limit is enforced, but very long files use more memory since the whole file is decoded in your browser — extremely long recordings (multi-hour) may be slow or fail on lower-memory devices.

No, decoding and trimming happen locally in your browser; the file is never sent to a server.

Yes. You can upload an MP3, choose the section you want to keep, preview the trimmed clip, and download the result. The exported file is WAV, even when the original input was MP3.

Related tools

Getting a clean audio cut

A technically correct cut can still sound abrupt if it lands in the middle of a word, beat or breath. Zoom into the waveform, leave a little context around speech, and preview the start and end before downloading.

  • For speech, cut during silence or between words when possible.
  • For music, listen for the beat so the edit does not feel accidental.
  • Keep the original file until you have checked the exported clip on another player.

Related reading: What “runs in your browser” means for privacy