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Audio Cutter

Audio Cutter

Trim songs, voice notes, podcasts and ringtones. Drag across the waveform, shape the edges, then export as WAV, MP3 or WebM.

FreeNo sign-upWAV, MP3, WebMPrivate: stays on your device
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Quick recipes
Edited on your device. Nothing is uploaded.
Drag to select. Drag the amber edges to refine, or drag a selection onto Clips & exports to save it as a clip. Ctrl + scroll to zoom.
×1
00:00.000/ 00:00.0
Peak– Average– Output–
No cuts — the whole file is kept
Drop audio to open it

Trim songs, voice notes, podcasts and ringtones right in your browser. Drag across the waveform to select the part you want to keep, fine-tune with the time boxes, add fade-ins and fade-outs, fix the volume — then export. Your audio is decoded and edited on your device; it is never uploaded. Pair it with the MP3 Tag Editor to finish the file properly.

For ringtones, podcast clips, voice notes and samples — cut precisely, without uploading your audio anywhere.

Part of the Toolz collection — free browser-based utilities.

100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device

UNDERSTAND YOUR RESULTS

Audio Cutter — Trim MP3, WAV, OGG & M4A in Your Browser guide

Cut and trim audio in your browser: load a song, voice note, podcast or ringtone, drag across the waveform to select the part you want to keep — or mark as many parts as you like to remove and keep the rest — add fade-ins and fade-outs, fix the volume, change the speed or reverse the clip, then export as WAV, MP3, WebM or OGG. The audio is decoded and edited on your device — it is never uploaded.

How to use this tool

  1. Choose an audio file (MP3, WAV, OGG, M4A and most other formats your browser can play), drag one in, or try the demo clip. The waveform appears with the whole file selected by default, and the file details — length, sample rate, channels and size — show in the file bar above the waveform.
  2. Drag across the waveform to select the part to keep, or type the exact start and end times in seconds. Play just the selection to check it, and switch Loop on to hear it repeat while you nudge the edges. Switch the selection to Cut-out mode to remove the highlighted part instead of keeping it, or to Remove parts mode to mark several sections — ads, long pauses, mistakes — and export the file with all of them removed in one pass, or use Trim silence to mark the real start and end of a recording automatically.
  3. Optionally add fade-in and fade-out (up to 10 seconds each, with a smooth, linear or exponential curve), adjust the volume, change the speed (0.5× to 2×), reverse the clip or convert it to mono, or tick Normalise to lift quiet recordings to full volume. Pick WAV for lossless quality, MP3 for the format every player accepts, or WebM or OGG for a much smaller file, then export.

A worked example

Making a ringtone from a voice recording: drag over the best 25 seconds, set a 0.5 second fade-in and a 2 second fade-out so it does not start or stop abruptly, normalise so it is loud enough to hear in a pocket, and export WAV — most phones accept it directly, and the MP3 Tag Editor finishes the file with a proper title.

What you can do with this tool

How it works

Your browser decodes the file to raw audio samples and the waveform is drawn from those samples. Export renders your selection offline through the Web Audio API: the trim is copied sample-exact, fades are applied as gain ramps in the curve you chose (smooth, linear or exponential), normalise scans the loudest peak and scales the selection so the peak reaches 0.99 of full volume, and the result is encoded to WAV (16-bit PCM, lossless), encoded to MP3 in your browser by the clean-licence lamejs encoder, encoded to OGG/Opus by a vendored libopus WASM encoder (opus-recorder, MIT/BSD), or recorded to WebM/Opus in real time. No server ever sees the audio.

Frequently asked questions

Is my audio uploaded anywhere?

No. The file is decoded and cut entirely in your browser with the Web Audio API — nothing is sent to a server, so even private voice notes stay private.

How do I cut a precise moment?

Type the start and end seconds in the boxes (tenths of a second are allowed), or use the zoom controls to stretch the waveform and drag the selection into place. Playing the selection lets you audition exactly what will be exported.

Can I export MP3?

Yes — pick MP3 in the Export card and choose a bitrate: higher bitrates sound closer to the original and make bigger files, and 192 kbps is a good all-round choice for music. The encoder (lamejs) is clean-licence and runs entirely in your browser, so your audio still never leaves your device.

Can I export OGG?

Yes — pick OGG in the Export card. OGG/Opus gives excellent quality at a small file size and is widely used by open-source players and tools. It is encoded in your browser by a vendored libopus WASM encoder (opus-recorder, MIT/BSD), so your audio still never leaves your device.

What does Normalise actually do?

It finds the loudest peak in your selection and raises the whole selection so that peak sits at full volume. Quiet voice notes and recordings made at a distance become much easier to hear, without changing the balance inside the clip.

Will cutting reduce the quality?

WAV export is lossless: the samples in the selected range are copied exactly, aside from any fades, volume or speed changes you choose. MP3, WebM/Opus and OGG/Opus are compressed, but at a sensible bitrate the difference is inaudible for most material.

Can I remove several parts of one file at once?

Yes — switch to Remove parts mode, select each part on the waveform and choose Add cut, or drag the selection onto the cuts list. Overlapping cuts merge automatically, the list shows how much is being removed and how long the result will be, and the export joins what is left with a short crossfade at each join so there are no clicks.

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