LOCAL AUDIO EDITOR
Your original file stays unchanged.
Keep the part you need. Remove a mistake. Preview your edit, then download a new WAV.
Choose a recording to begin. Audio plays only when you press Preview.
Audio Cutter Online Keep an excerpt or remove one section from a recording. Enter seconds, timecodes or 4/4 bars, check the exact plan and download 16-bit WAV.
Extract a podcast quote or remove an unwanted section while retaining the audio before and after it. For bar-length cuts, use a known steady BPM and place Start on the downbeat yourself.
The selected decoded samples become a new WAV file. The original recording is unchanged. Preview the cut before using it in a project.
Enter 75.250, 1:15.250 or 0:01:15.250 for the same position. Drag the waveform handles or apply 1–128 bars at a manually entered 20–300 BPM. Invalid times and an overlong bar selection are rejected, not silently shortened.
WAV header, byte length and hash checks run before download unlocks. Changing the audio or selected range locks the old download. These checks do not judge sound quality or prove a click-free loop.
Audio, filenames, selected times and hashes stay in this browser tool. Allowlisted page analytics do not receive them. Use a trusted device for private recordings.
Maximum input: 200 MiB. Maximum WAV output: 100 MiB. No MP3 export, tempo detection, beat snapping, time-stretch, fades, crossfades or mastering. Codec support depends on your browser.
The built-in sample lets you try selection, preview and WAV export without choosing a personal file.
Clearly labeled synthetic 4-second, 330 Hz mono PCM WAV. It is a fixture, not a user recording or claimed case study.
On the four-second sample, set Start to 1 and End to 3. The resulting clip is two seconds of 16-bit PCM WAV. Replay, WAV and optional receipts all refer to that selected range.
Not for forensic audio, music mastering, copyrighted extraction without rights, or confidential recordings on untrusted devices.
Privacy boundary: Audio bytes, decoded samples, filename, selection, and hashes stay inside this browser tool. Page analytics can receive only allowlisted event metadata—never raw audio, filename, range, or hash. Do not use regulated or confidential media on an untrusted device.
On a recording longer than 2 minutes, enter Start 1:15.250 and End 2:00, then choose Keep selection. The requested clip is 44.750 seconds. The plan shows the actual decoded-frame duration and expected WAV bytes before export.
On a 90-second voice recording, select 0:20 to 0:30 and choose Remove selection. The tool retains 0–20 seconds and 30–90 seconds in that order, producing 80 seconds with a direct join at 20 seconds. Nothing is replaced with silence.
The preview and exported WAV use the same retained frame plan. Optional receipts record the source ranges and join location. Editing a time or switching Keep/Remove locks the old download. Reset clears the source and result from tool state.
A direct join may sound abrupt or click. This is a precise one-range editing tool, not an automatic speech editor or a crossfade workstation. Listen to the result when appropriate and use a DAW for detailed repair.
Choose audio, drag or type the start and end time, preview the selection, then create the verified WAV. Download buttons unlock only after the exact byte and SHA-256 checks finish.
Enter the unwanted section’s Start and End, select “Remove selection · join remaining audio”, then check the retained ranges. Create the WAV and download it. The before and after ranges are concatenated with no fade or added silence; the original file is not changed. Removing the whole recording is blocked because it would leave an empty output.
Yes. Start and End accept seconds, M:SS.mmm or H:MM:SS.mmm. For example, 83.5 and 1:23.500 mean the same time. Seconds after a colon must be below 60; minutes in a three-part timecode must also be below 60. An invalid draft stays visible and blocks preview, creation and stale downloads until you fix it.
Set Start on your chosen downbeat, enter the track’s known BPM and a bar count under “Select by bars · 4/4”, then choose “Apply bar length”. The duration is bars × 4 × 60 ÷ BPM. At 128 BPM, 8 bars is 15 seconds; starting at 10 seconds selects through 25 seconds. The file must contain the whole range. Preview before exporting.
No. BPM is entered manually. The tool calculates a duration; it does not detect beats, move the start to a downbeat, stretch audio or add a crossfade. Variable-tempo recordings may not fit the calculation. Listen for timing and clicks at both boundaries, and use a DAW when you need loop editing or fades.
No. MP3, WAV, M4A and OGG are possible inputs when your browser can decode them, but output is always 16-bit PCM WAV. The original compression and container are not preserved, and a WAV may be larger than the original compressed file.
Standard trimming happens in your browser tab without uploading to a FastTool application server.
Choose one audio file up to 200 MiB. WAV and common MP3 files are the most reliable; M4A, OGG and unusual codecs depend on the browser decoder. WAV output is limited to 100 MiB. If a file will not decode or the selected range is too large, no output is created; choose a supported source or a shorter range.
Audio Cutter reads the chosen file with the File API, decodes it through Web Audio, draws the decoded waveform on Canvas, writes the selected sample frames as 16-bit PCM WAV, and computes exact SHA-256 values with Web Crypto. It does not use MediaRecorder, an upload service, or an optional codec encoder.