Audio Cutter — Split & Trim Audio Online (Free, No Upload)

This tool works best on a desktop browser.

Drop a WAV file here or click to choose one

Opens multi-hour recordings · your file never leaves your computer

Analyzing waveform…

0:00:00.0 / 0:00:00

Drag: scrub · Shift+drag: create region · drag a boundary: resize · click: seek/select

#	Label (appended to the file name)	Start	End	Length

How to use the audio cutter

Click Open file (or drop an audio file onto the page). Multi-hour WAV recordings open instantly.

Mark regions while listening — press B at each boundary, drag with Shift, or click Auto-split by silence to detect them for you.

Label the regions; the labels become part of the exported file names.

Press X on any region you want cut out of the final audio.

Click Export regions for one file per region, or Merge & save for a single joined file — as lossless WAV or 192 kbps MP3.

Features

Lossless WAV splitting — regions are byte-copied, never re-encoded

Streams huge files from disk: 8-hour recordings are no problem

Auto-split by silence with adjustable threshold and gap length

Exclude regions (cut out coughs, retakes, silence) and export the cleaned file

WAV or MP3 (192 kbps) export, scrub-while-listening, undo/redo

Region list CSV export — open it in the Audio Editor to keep editing

🔒 Private by design — your audio is processed entirely in your browser. Files never leave your device, and there is nothing to upload or sign up for.

FAQ

Is the audio cutting lossless?

For WAV files, yes — regions are byte-copied straight from the source file with no decoding or re-encoding. MP3 export re-encodes at 192 kbps.

How large a file can I open?

WAV files are streamed from disk rather than loaded into memory, so multi-hour recordings open fine. Compressed formats (MP3, M4A, FLAC, OGG) are supported up to 300MB.

Can it remove sections from the middle of a recording?

Yes. Mark a region and press X to exclude it, then use Merge & save — the excluded parts are skipped in the final file.

Does my audio get uploaded?

No. Everything runs locally in your browser. Your file never leaves your device.

Need multiple tracks, fades or volume control? Continue in the Audio Editor — it imports this tool's region-list CSV.

Take a break: try the Typing Speed Test or the Reaction Time Test.

`Space`	Play / pause
`←` `→`	Seek 5s (`Shift` = 1min, `Alt` = 1s)
`B`	Split at the playhead (press at each boundary while listening)
`I` / `O`	Mark region start / end → `Enter` to add it
`Enter`	Add a region from the marked start/end
`Esc`	Clear marks / deselect
`X`	Exclude / re-include the selected region (cut it from the audio)
`Delete` / `⌫`	Delete the selected region from the list
`Drag`	Scrub the waveform while listening
`Shift`+`Drag`	Create a region
`[` / `]`	Jump to the previous / next region boundary
`F`	Zoom to the selected region (or the one at the playhead)
`+` / `−` / `0`	Zoom in / out / fit all
`Home` / `End`	Jump to the start / end
`⌘Z` / `⌘⇧Z`	Undo / redo