CalConverters

Audio Cutter

Drop an audio file below, drag the handles to choose the part you want to keep, optionally fade the edges, then save as MP3 or WAV.

Files never leave your device

Drop an audio file here, click to browse, or paste

MP3WAVM4AAACOGGFLACWEBA

What This Tool Does

This cutter trims an audio file down to just the part you want — a ringtone from a song, a quote from a podcast, the usable take from a voice memo. Drop a file, drag the two handles around the region to keep, optionally fade the edges so the clip doesn't start or stop abruptly, and save the result as MP3 or WAV.

Everything happens on your device. There's no upload step and no server queue: the audio is decoded by your browser's own audio engine, and the cut is encoded locally too.

Picking the Region

The waveform shows the whole file at once, with the selected region highlighted and everything outside it dimmed. You can work at three levels of precision:

  1. Drag the handles for rough selection.
  2. Arrow keys nudge a focused handle by 0.1s (hold Shift for 1s steps).
  3. Type exact times — the Start and End fields accept mm:ss.d (like 1:23.4) or plain seconds (like 83.4).
Tip: Press Space to play the current selection at any time — playback always previews exactly what will be saved, including the fades.

Fades That Match the Export

Fade in and fade out are linear ramps. Their length is 3 seconds, automatically shortened to a quarter of the selection for short clips — a 4-second ringtone gets 1-second fades, so it never sounds swallowed. The ramp is drawn on the waveform, and the preview applies the identical envelope you'll hear in the saved file.

MP3 or WAV Output

FormatBest forSize
MP3Ringtones, sharing, most usesSmall (~190 kbps VBR)
WAVFurther editing, archivingLarge (uncompressed)

MP3 encoding runs in a background worker with live progress, so the page stays responsive even for long clips. WAV export is instant.

Your Audio Never Leaves Your Device

The decoder is your browser's own; the MP3 encoder is a small WebAssembly build of LAME that loads on first save. At no point are your files sent anywhere — close the tab and nothing remains.

Frequently asked questions

Is this audio cutter free?
Yes. There's no sign-up, no watermark, and no length limit imposed by a server. The tool runs entirely in your browser, so there's nothing to pay for.
Does my audio get uploaded anywhere?
No. The file is decoded and cut locally by your browser using the Web Audio API. Nothing ever travels over the network, which also makes the tool fast.
Which input formats are supported?
MP3, WAV, M4A/AAC, OGG, and FLAC — anything your browser can decode natively. If a file can't be read, you'll see a clear message rather than a broken editor.
Which output formats can I save?
MP3 (high-quality VBR, roughly 190 kbps) or WAV (uncompressed 16-bit PCM). WAV keeps every detail; MP3 keeps the file small and plays everywhere.
How do the fades work?
Fade in and fade out are linear ramps up to 3 seconds long, capped at a quarter of your selection so short clips still sound natural. The preview plays exactly what gets saved.
Can I set the cut points precisely?
Yes. Besides dragging the two handles on the waveform, you can type exact times like 1:23.4 into the Start and End fields, and nudge handles with the arrow keys.
Why does the cut MP3 sound identical to the preview?
The preview uses the same fade math as the export, applied through Web Audio gain automation — what you hear on Play is byte-for-byte the envelope that gets encoded.
Is there a maximum file length?
There's no hard limit, but decoded audio uses roughly 10 MB of memory per stereo minute, so very long files (over 30 minutes) may be slow on low-memory devices.