Storage Converter
Convert between bytes, kilobytes, megabytes, gigabytes and terabytes using binary or decimal factors. Perfect for calculating file and disk sizes.
Digital storage
Result
1024 MiB =
1.048.576 KiB
Popular lookups
How to use: Storage
- 1Pick the system: decimal (1 KB = 1,000 B) or binary (1 KiB = 1,024 B).
- 2Type the amount and choose the source and target units.
- 3Read the exact result in bytes and in the chosen unit.
What is it for?
- Understand why a 1 TB drive shows about 931 GB in your operating system.
- Estimate how many files or photos fit on a drive.
- Size hosting plans, databases or network transfers.
Why your disk seems to "lose" space
Decimal versus binary
Manufacturers use decimal prefixes (1 GB = 1,000,000,000 bytes) and many operating systems display binary values (1 GiB = 1,073,741,824 bytes). A 1 TB drive is 10^12 bytes, about 931 GiB: no space is missing, the unit changes.
The right prefixes
KB, MB, GB and TB are powers of 1,000 per the SI; KiB, MiB, GiB and TiB are powers of 1,024 per the IEC standard. Windows shows "GB" but calculates in binary, while macOS and most modern Linux file managers use decimal.
Bits and bytes
A byte is 8 bits. Network speeds are advertised in bits per second (Mbps) and files are measured in bytes: a 100 Mbps connection downloads at most about 12.5 MB per second.
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Frequently asked questions
What's the difference between decimal GB and binary GiB?+
A decimal GB (used by disk manufacturers) is 1,000,000,000 bytes. A binary GiB is 1,073,741,824 bytes. The tool shows both options.
Why does my drive show less space than advertised?+
Manufacturers use the decimal system (1 GB = 1,000 MB) while operating systems usually use binary (1 GB = 1,024 MB), hence the difference.