The calculator moves between storage units by powers of 1,000 or 1,024, depending on the selected unit system.
Device makers often advertise decimal capacity, while operating systems may display binary-based values, so the same drive can appear smaller on screen.
PRACTICAL GUIDE
When to use this calculator
Compare drive capacity, file sizes, download limits and memory figures shown using different units.
WORKED EXAMPLE
See the calculation in context
With binary steps, 1 GB equals 1,024 MB. With decimal steps, 1 GB equals 1,000 MB.
COMMON QUESTIONS
Frequently asked questions
Why are there two unit systems?
Storage manufacturers commonly use decimal units, while some software uses powers of 1,024.
Does this convert internet speed?
No. Storage capacity and transfer speed are different; speed is usually measured in bits per second.
