Audio Cutter

Trim and cut MP3, WAV, M4A and other audio files with sub-second precision in your browser.

Your audio stays on your device. Processing happens locally in your browser.

Drag & drop an audio file

or click to browse — MP3, WAV, M4A, AAC, OGG, FLAC

What is this tool? Audio Cutter?

Audio cutting is one of the most common tasks anyone working with sound runs into, trimming silence at the start of a podcast, isolating a quote from a long recording, removing the awkward few seconds at the end of a voicemail. Our audio cutter uses the Web Audio API to decode any browser-supported format (MP3, WAV, M4A, AAC, OGG, FLAC) and writes a precise, lossless WAV cut entirely in your browser.

How do you use this tool? Audio Cutter

  1. Drop an audio file, Drag any MP3 / WAV / M4A / AAC / OGG / FLAC into the upload area.
  2. Pick start and end times, Use the range sliders or type exact seconds, sub-second precision.
  3. Cut and preview, Click Cut & preview to hear the result before downloading.
  4. Download, Save the cut as a 16-bit PCM WAV file.

Common Use Cases

Remove silence and mistakes

Trim empty lead-in, long pauses, or unwanted sections from recordings.

Create clips and excerpts

Extract a quote, sound effect, ringtone, or sample from a longer audio file.

Prepare podcast segments

Cut intros, outros, sponsor reads, or chapter excerpts before assembly in an editor.

Shorten voice notes

Keep only the useful portion before sharing or archiving a recording.

Why is this tool useful?

Precise start and end selection

Choose the useful interval without re-recording or opening a full multitrack editor.

Preview before export

Listen around the cut points and catch clipped words or unwanted silence.

Local file handling

Private voice recordings can remain on the device when processing occurs in the browser.

Best Practices

  • ✓ Place cuts at natural pauses or zero crossings when possible to reduce clicks and abrupt transitions.
  • ✓ Leave a small amount of room before speech begins and after it ends so words do not feel clipped.
  • ✓ Preview several seconds around both cut points with headphones before exporting.
  • ✓ Keep the original recording, because trimmed audio cannot restore removed sections.
  • ✓ Use fades when the source begins or ends with sustained sound and the tool supports them.

Practical examples

Extract a section from an interview
Input
3:42 MP3, start: 0:35, end: 1:10.
Output
A 35-second audio clip containing only the selected interval.
Remove silence from the beginning
Input
2:05 WAV, start: 0:04, end: 2:05.
Output
A 2:01 WAV with the first four seconds removed.

Frequently Asked Questions

MP3 encoding in the browser without a heavy library (LAME) isn't practical. WAV is universally supported and lossless. You can re-encode to MP3 with our future MP3 encoder, or use a desktop tool.

Yes. Decoding to PCM and re-encoding as WAV is lossless, you only lose information when you re-encode to a lossy format like MP3 / AAC.

Limited only by your browser's memory. Most modern browsers handle 200 MB+ comfortably.

No. The tool creates a new result in the browser. Your original remains unchanged unless you overwrite it after downloading.

The tool does not add ownership restrictions to your output. You remain responsible for rights to the source material and for complying with third party licenses.

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