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Cut and trim an audio file

Drag the handles to the part you want and save it. In fast mode the original audio data is copied, so nothing gets a second round of compression.

I want Trim

Settings appear once you add an audio file.

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Advanced 1
Exact cut Off (recommended): instant, and the audio is copied without re-encoding. On: cut exactly where you set it, but the audio is compressed again.

Done on your device No upload, no queue, no sign-up.

Bytes sent anywhere: 0 B

Works offline after you’ve used it once.

How to use it

Your audio goes into this browser tab, is cut to the part between the handles on your device, and comes back without being re-encoded. 0 bytes uploaded

  1. Add your file

    Drop in an MP3, WAV, M4A, FLAC or Opus file. It plays right here.

  2. Check the settings

    Drag the handles, or type the start and end in seconds for an exact cut.

  3. Save the result

    Press trim and save the piece you kept. The original file isn’t changed.

Why it doesn’t upload

Voice notes, interviews and rough mixes are private. Trimming happens in this tab, so the recording never goes to a server — and huge files trim in a second because there is nothing to upload.

How to check for yourself

Worth knowing

  • Fast mode cuts at the nearest frame boundary, so the start can be a fraction of a second early. Turn on Exact cut when the timing has to be precise.
  • Exact cut re-encodes the audio, which loses a little quality in lossy formats.
  • This keeps one section. To cut a piece out of the middle, trim twice and put the parts back together with Join Audio.
  • Formats the browser can’t play (APE, WMA, AMR…) can still be trimmed by typing times; they use the FFmpeg engine.

Questions

How do I cut an MP3 without losing quality?

Leave Exact cut off. The compressed audio between your two points is copied straight into the new file, so it is bit-for-bit identical to the original in that section.

Why does my trimmed file start slightly early?

Audio can only be copied losslessly at frame boundaries, which are a fraction of a second apart. Turn on Exact cut for a sample-accurate start.

Can I trim a song to just the part I want?

Yes — drag the handles over the waveform to the section you want and save. On MP3 and M4A the audio between the handles is copied rather than re-encoded, so the excerpt sounds exactly like the original.

Can I trim a ringtone to 30 seconds?

Yes. Set the start and end 30 seconds apart, and choose M4A for an iPhone ringtone or MP3 for Android.

Can I trim video files too?

Yes, with Trim Video — same controls, with a filmstrip instead of a waveform.

Read more about this

Next steps

Often used before or after Trim Audio. These run on your device too.