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Video Trimmer
Cut a clip out of a video between an exact start and end time.
Drag & drop a file here
or use the button below · processed locally on your device
Output settings
How Video Trimmer works
- 1Drag & drop your file onto the upload zone, or tap Browse Files.
- 2Review the detected file information — size, type, resolution or page count.
- 3Tune the output settings to match what you need.
- 4Press Convert and watch the progress bar; processing happens locally in your browser.
- 5Download individual results, or use Download All to get a ZIP of everything.
Frequently asked questions
Is Video Trimmer free to use?
Yes. Every converter on OneCalc is free and unlimited, with no account and no watermark.
Are my files uploaded to a server?
No. Conversion runs entirely inside your browser using WebAssembly and Canvas APIs, so your files never leave your device.
Does it work on mobile?
Yes. The interface is fully responsive and supports touch, the mobile file picker and the native share sheet.
How large a file can I process?
The practical limit is your device memory. Files up to a few hundred megabytes work well on a modern desktop browser.