Free Online File Size Converter
Convert between B, KB, MB, GB and TB in one step, and see how many photos and songs fit in 100MB.
Key Features
All-Unit Conversion
Convert between B, KB, MB, GB, TB and bit instantly.
Vivid Comparison
Tells you how many photos, songs and minutes of video fit in 100MB.
Dual Base Support
Supports both base-1024 (computer) and base-1000 (storage vendor) calculations.
Real-Time Conversion
Enter a value and pick a unit to get results instantly β no button needed.
How to Use
Enter a Value
Enter a file size and choose its current unit.
See the Conversion
All unit results appear instantly, along with a vivid size comparison.
Copy the Result
Click the copy button on a result row to paste it directly.
Frequently Asked Questions
Is 1KB 1024 bytes or 1000 bytes?
In computing it is usually 1024 bytes (2^10), but storage vendors (hard drives, USB drives) use 1000 bytes. The tool supports both bases for easy comparison.
Why does a 64GB USB drive show only about 58GB?
Because vendors label capacity in base-1000 while operating systems display in base-1024. 64GB Γ 1000Β³ Γ· 1024Β³ β 59.6GB β this is normal.
What is the difference between bit and Byte?
A bit is the smallest unit (0 or 1); 1 Byte = 8 bits. Network bandwidth usually uses bits (e.g. a 100Mbps connection equals about 12.5MB/s actual download speed).
Is my data uploaded to a server?
No. Conversion runs entirely in your browser; the input is never uploaded to any server.