File Size Upload Converter
Upload or drag any file to see its exact size in bytes, KB, MB, GB and TB instantly.
Upload a File
Drag & drop a file here, or click to browse
Any file type supported
Your files are processed locally and never uploaded or stored
File Size
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Manual Conversion
Result
Decimal (SI): —
Binary (IEC): —
Exact value: —
Quick convert to:
How It Works
Upload or drag any file to see its exact size in bytes, KB, MB, GB and TB instantly.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing happens entirely in your browser. Your file never leaves your device.
What file types are supported?
Any file type — images, videos, PDFs, documents, archives, executables. There is no restriction.
What is the maximum file size?
There is no hard limit. Very large files (multi-GB) will still work.
Why does the size differ from the file explorer?
File explorers may use binary units (KiB/MiB) while this tool shows both decimal (SI) and binary (IEC).