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Audio

MP3 Cutter & Audio Trimmer

Trim or cut uploaded audio with draggable waveform handles, precise preview, undo, and exports to WAV, MP3, M4A, OGG, or FLAC.

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About this tool

MP3 Cutter & Audio Trimmer uses the same visual editor as Audio Recorder. Choose an audio file to display its waveform, then drag either selection handle to set the edges or slide the highlighted region to move it. Keep selection crops away everything outside the selected range. Cut selection removes the selected section and joins the remaining audio. Preview precisely, undo the last edit, or restore the original file. Name the result and save it as WAV by default, or choose MP3, M4A, OGG, or FLAC. Editing happens locally with browser audio APIs; other export formats use the existing browser-based audio engine.

Why use it

  • Edit with the same waveform controls as Audio Recorder.

  • Keep a clip or remove a mistake from the middle of a file.

  • Recover with undo and preserve the original download.

  • Export in five formats with WAV selected by default.

  • Process audio locally without uploading it to a server.

How to use

  1. Choose or drop an audio file and wait for its waveform.
  2. Drag the waveform handles, move the highlighted region, or type Start and End times.
  3. Play selection to preview the exact section; adjust playback speed if helpful.
  4. Use Keep selection to crop the edges, or Cut selection to remove the highlighted audio.
  5. Undo last edit or Restore original if you want to reverse a change.
  6. Choose a filename and export format, then download your edited audio.

When it helps

  • Cutting a ringtone from a full song
  • Trimming silence or unwanted sections from a podcast recording
  • Extracting a short sound effect from a longer audio file
  • Creating short audio clips for social media or messaging
  • Splitting a long mix into individual tracks
  • Removing intro/outro music from voice recordings

Examples

Ringtone

Input

A song with a useful 30-second hook

Expected result

Keep the hook and export it in your preferred format.

Remove a mistake

Input

A spoken recording with a false start in the middle

Expected result

Cut the unwanted section and preview the joined audio.

Sound effect

Input

A WAV recording with an effect from 12.4 to 14.1 seconds

Expected result

Keep that range to export a 1.7-second sound effect.

Tips

  • Drag the highlighted region to preserve its length while changing its position.
  • Use the time inputs for millisecond adjustments; arrow keys also move a focused waveform handle.
  • Download the edited result before changing files or leaving the page.

Frequently Asked Questions

Does my audio leave my device?
No. Decoding, editing, and conversion happen in your browser. The audio engine may be downloaded for non-WAV exports, but your file is not uploaded.
What is the difference between Keep and Cut?
Keep selection crops everything outside the highlighted range. Cut selection deletes the highlighted range and joins the remaining audio.
Which formats are supported?
Choose MP3, WAV, M4A, OGG, FLAC, or WebM files that your browser can decode. Save edited audio as WAV, MP3, M4A, OGG, or FLAC.
Does exporting preserve the original quality?
WAV stores edited audio as 16-bit PCM. MP3, M4A, and OGG use lossy encoding; FLAC compresses losslessly from the edited WAV. The untouched original remains available separately.
Can I undo a cut?
Undo last edit reverses the latest edit. Restore original returns to the full uploaded audio.
What if my file cannot be decoded?
Editing remains unavailable and a message explains the problem. Try another supported file or browser. You can still download the original.
How precise are the controls?
Time inputs support milliseconds. Waveform handles support pointer and keyboard input; selection preview uses a scheduled audio buffer to stop at the selected endpoint.
Are large files supported?
The browser must decode the file into memory, so long recordings can exceed available memory. Use a shorter file if decoding or editing fails.

Explore the category

Audio Recorder Record with a live waveform, trim the edges, cut unwanted sections, undo edits, and download your voice recording as WAV. Audio Merger Concatenate multiple MP3, WAV, M4A, OGG or FLAC files into one continuous audio track. Drag to reorder, set output format and bitrate, then download. Audio Compressor Shrink MP3, WAV, M4A, OGG and FLAC files by re-encoding at a lower bitrate. Choose 32–320 kbps, pick MP3, OGG or M4A output, then download. 100% browser-side via ffmpeg.wasm. Audio Format Converter Convert audio between MP3, WAV, OGG, M4A and FLAC in your browser. Choose bitrate or sample rate, then download. Runs locally via ffmpeg.wasm — no uploads. Audio Reverser Reverse any audio file so it plays backwards. Drop MP3, WAV, M4A, OGG or FLAC, choose output format, and download. ffmpeg.wasm areverse — no upload. Audio Loudness Normalizer (LUFS) Normalize loudness of MP3, WAV, M4A, OGG and FLAC files using ffmpeg loudnorm (EBU R128). Hit Spotify, podcast or broadcast targets — runs locally via ffmpeg.wasm.
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Glossary

Waveform
A visual representation of audio amplitude over time.
Selection
The highlighted range used for preview, crop, and cut.
PCM WAV
An uncompressed audio file; this editor writes 16-bit samples.