LalabbToolsWhole file
Start and end are set to 0
Audio
Audio Converter / Trimmer
Convert or trim supported audio.
- Input
- Process
- Result
Choose an audio file to convert
The input stays in this browser tab and is not uploaded.
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Support LalabbSave a selected audio segment as WAV, or use WebM for longer recordings
Save a supported audio file or a selected segment as WAV, or record a longer segment as audio-only WebM.
First 30 seconds
A quick excerpt for preview or editing
Custom segment
Enter the start and end in seconds
How to use it
Prepare the files, choose the settings, and check the result
Example: save the first 15 seconds of a voice note as an editing clip.
- 1Choose a supported audio file.
- 2Choose WAV or long-file WebM, then select the whole file, first 30 seconds, or a custom range.
- 3Create the output, play it to check the sound and duration, and download it.
Settings and reference
What the options mean
Whole fileStart and end are set to 0
First 30 secondsA quick excerpt for preview or editing
Custom segmentEnter the start and end in seconds
End 0Continue from the selected start to the source end
ExampleStart 10 s and end 25 s produces a 15-second segment
WAV sizeUncompressed audio can be much larger than the source
Short spoken excerpts
Choose the segment you need and check both its first and last seconds after saving.
Browser-readable audio
Input support depends on the browser’s decoder. Changing a filename extension does not change its audio format.
WAV output
WAV is useful for editing, but it is often larger than compressed audio. Use the longer-recording WebM option when appropriate.
Sound quality
Converting to WAV does not restore detail or quality missing from the original recording.
Scope and limitations
Know what this tool does and does not do
1Time values are entered in seconds.
2Long WAV output can consume substantial memory.
3Check the exported audio by playing it before using it in another project.
4WAV is convenient for editing but can be large. Long-file WebM records during playback and supports up to three hours and 1 GB.
Before you finish
Open the downloaded result and check it
Keep your originals until the new files meet your needs.
- End 0: Continue from the selected start to the source end
- Example: Start 10 s and end 25 s produces a 15-second segment
- WAV size: Uncompressed audio can be much larger than the source
Help and troubleshooting
Frequently asked questions
What does an end time of 0 mean?
Save from the selected start position to the end of the original.
Does WAV improve sound quality?
No. It is convenient for editing but does not recreate missing sound detail.
Why is the WAV so large?
WAV commonly stores uncompressed samples, unlike compact source formats.
Can this export MP3?
No. Choose WAV or audio-only WebM; this tool does not export MP3.
Continue your workflow
Related tools
Quick questions
Which files can I use with Audio Converter / Trimmer?
Supported files: audio.
What result does Audio Converter / Trimmer create?
Output: WAV or audio-only WebM.
What does an end time of 0 mean?
Save from the selected start position to the end of the original.
Are my files uploaded?
No. The tool processes selected files in this browser on your device.
How this tool works
Choose audio; Convert or trim supported audio. Download WAV or audio-only WebM. For a related task, try Extract Audio from Video.