Start and end positions can be adjusted in hundredths of a second.
CUT / AVAILABLE NOW
Audio Trimmer
Keep only the good part. Set precise start and end points on a readable waveform, preview, then export WAV or MP3.
CUT / dedicated toolFiles never leave this tab
00:00LOCAL BUFFER--:--
Preview controls appear after you add or generate audio.
GUIDE / audio trimmer online
What is an online audio trimmer?
An online audio trimmer keeps a selected time range from a longer recording. In SoundTools, you choose start and end points to one-hundredth of a second, process the selection inside your browser, preview the exact result, and export it as WAV or MP3. The original file stays on your device and is never uploaded.
RELATED USES
- trim audio online
- audio trimmer no upload
- audio trimmer free
- cut audio online
- audio cutter
FIELD NOTES / 01
Cut the useful moment, keep the source private
The workbench draws a waveform from the decoded source and provides separate start and end controls. Each control moves in 0.01-second steps, and the selection readout shows the resulting duration before you process the cut.
Trimming creates a new audio buffer containing only the selected sample range. It does not overwrite the original file, remove a middle section, add fades, or join clips. Save 16-bit PCM WAV for an uncompressed handoff or encode a smaller 192 kbps MP3 locally for convenient sharing.
PROCESS / THREE STEPS
How to trim audio online
- 01
Open a compatible recording
Choose an MP3, WAV, M4A, AAC, or OGG file. The source is decoded in the tab, and its waveform and total duration appear in the workbench.
- 02
Set the start and end
Move the two time controls to define the section you want to keep. Leave at least 0.05 seconds between the markers and check the selection duration.
- 03
Process, preview, and export
Create the trimmed result, listen to it beside the original, then download the selected section as 16-bit WAV or 192 kbps MP3 if the boundaries sound right.
SIGNAL NOTES / VERIFIED BEHAVIOR
What this tool actually does
Clear limits are part of a useful tool. These values describe the processor currently running in this page.
The controls preserve a small valid selection between the two boundaries.
Export 16-bit PCM WAV or encode a smaller MP3 locally with the source sample rate and up to two channels.
USE CASES / 02
Useful reasons to cut an audio file
- Remove dead air
Drop silence or setup chatter from the beginning and end of a voice note, interview, or lecture.
- Extract a short clip
Keep one quote, musical phrase, sound effect, or reference section from a longer recording.
- Prepare a clean handoff
Create a focused WAV segment before moving it into a video editor, sampler, presentation, or transcription workflow.
QUESTIONS / PRACTICAL ANSWERS
Questions about this tool
Answers based on the current browser processor—not promises about a future version.
01Can I preview the trimmed audio before downloading?
Yes. After processing, the result player appears beside the original player so you can hear the exact selected section before saving it.
02How precise are the trim controls?
The start and end sliders move in 0.01-second increments. The final cut is aligned to the nearest sample available at the source sample rate.
03Can I remove a section from the middle?
Not in this focused trimmer. It keeps one continuous range between the selected start and end points. Removing a middle section requires a multi-cut editor.
04Does trimming reduce audio quality?
WAV export writes the selected samples as new 16-bit PCM, while MP3 export performs a new 192 kbps lossy encode. Neither option preserves the original compressed MP3 or M4A bitstream.
05Can I download the trimmed audio as MP3?
Yes. Choose MP3 before downloading to encode the processed selection at 192 kbps inside the browser. WAV remains available when you prefer an uncompressed file.
06Does SoundTools upload the file?
No. Decoding, trimming, previewing, and WAV or MP3 creation happen locally in your browser tab.