WAV trimmer
Trim a WAV recording and save it as a lossless WAV at the same sample rate. Ideal for samples, voice-overs and field recordings.
Drop an audio or video file here
MP3, M4A, WAV, OGG, FLAC, MP4, MOV… — processed on your device, never uploaded
How it works
WAV files hold uncompressed PCM audio, so trimming them is lossless as long as you save back to WAV. This trimmer reads the sample rate from the WAV header and keeps it — a 48 kHz recording stays 48 kHz — then writes a standard 16-bit PCM file that every editor, DAW and phone can open.
Use it to cut the count-in from a music sample, remove the handling noise at the start of a field recording, or tighten a voice-over take before it goes into a video. Trim silence detects audio above −45 dBFS and snaps the selection to it, which is handy for batches of short recordings.
If the source is 24-bit or 32-bit float, the exported file is 16-bit. That is the standard for distribution (CDs and most streaming sources are 16-bit) and is more than enough for ringtones, notifications and spoken audio. Keep your 24-bit originals if you plan more processing.
Recommended settings
- Save as WAV to keep the trim lossless
- Sample rate is preserved from the original
- Trim silence snaps to audio above −45 dBFS
- Use Normalize to bring quiet recordings up to −1 dBFS
Step by step
- Open your audio. Click Open file or drop an MP3, M4A, WAV, OGG, FLAC or video file onto the page. It is decoded in your browser and never uploaded.
- Select the part to keep. Drag across the waveform, drag the handles, or type exact start and end times. Use Find loudest part or a length preset such as 30 s for ringtones.
- Add fades and set the volume. Set fade in and fade out lengths, then tick Normalize or adjust Volume. Press Play to preview exactly what will be exported.
- Download. Choose MP3, WAV, M4A or M4R, type a name and click Download.
FAQ
Is trimming a WAV file lossless?
Yes when you export WAV without effects at 16-bit from a 16-bit source. Fades, volume changes and normalizing change the samples on purpose, and higher bit-depth sources are converted to 16-bit.
Why is my WAV file so large?
Uncompressed CD-quality stereo audio uses about 10 MB per minute (44,100 samples × 2 channels × 2 bytes per second). Export MP3 or M4A for a file roughly ten times smaller.
Can I trim a 96 kHz WAV?
Yes. The original sample rate is kept for WAV export. MP3 export is converted to 44.1 kHz, which is the highest rate the MP3 format supports for common players.
Are my files uploaded?
No. Audio is decoded, edited and encoded in your browser with the Web Audio API, WebCodecs and a JavaScript MP3 encoder. Nothing is sent to a server, so it also works on slow connections once the page has loaded.
Which formats can I open?
Anything your browser can decode: MP3, WAV, M4A/AAC, OGG Vorbis, Opus and FLAC, plus the audio track of MP4, MOV and WebM videos. Chrome and Edge support the widest range.