Data Storage Converter
Convert digital storage and data sizes between decimal (SI) units based on 1000 and binary (IEC) units based on 1024. It explains why a "1 TB" drive shows up as about 931 GB on some computers.
How to use the Data Storage Converter
- Enter a data size.
- Pick the unit, for example GB (decimal) or GiB (binary).
- Pick the unit to convert to.
- Use the table to see the size in every unit.
Features
- Bits, bytes and network units (kb, Mb, Gb)
- Decimal KB, MB, GB, TB, PB (powers of 1000)
- Binary KiB, MiB, GiB, TiB, PiB (powers of 1024)
- Each unit labelled with its exact size
Benefits
- Understand why drives look smaller than advertised
- Convert internet speeds in megabits to megabytes
- Estimate file and backup sizes correctly
Frequently asked questions
What is the difference between GB and GiB?
A gigabyte (GB) is 1,000,000,000 bytes. A gibibyte (GiB) is 1,073,741,824 bytes (1024³). Drive makers use GB; many operating systems report GiB but label it GB.
Why does my 1 TB drive show 931 GB?
1 TB is 10¹² bytes, which equals about 931.3 GiB. The computer is showing binary units with a decimal label.
How do I convert Mbps to MB/s?
Divide megabits by 8 to get megabytes. A 100 Mb/s connection transfers at most 12.5 MB/s.
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