File Utilities
File Size Checker: Check MB Online
Check file size in KB, MB, or GB before upload, email, forms, or delivery. Files stay in your browser.
How it works
Files are measured locally. Nothing is uploaded.
- Add one or more files
- See each file's size with a visual comparison
- Check total size against email and USB limits
Drop files here or click to browse
File sizes
| File | Size | Relative |
|---|
How to check file size in MB
- Click "Add files" or drag files into the drop zone.
- View individual and total sizes with bar chart comparison.
- Check the email (< 25 MB) and USB FAT32 (< 4 GB) indicators.
Frequently asked questions
Can I check multiple files at once?
Yes. Add as many files as you like. The tool shows each size and the total.
Are my files uploaded?
No. Only the file size is read from your browser. No data leaves your device.