We all use GB (Gigabyte) and TB (Terabyte) to specify the storage space capacity of our computer / hardrive. However, Some of you might have seen the unit GiB abd TiB for storage capacityin you computer or memory specification. What is the difference ?
The difference is that GB/TB is calcuated with Base 10 (Decimal) and GiB/ TiB is calculated with Base 2 (Binary) - See the below 2 tables.
So, a Terabyte (TB) is exactly 1 trillion bytes, whereas a Tebibyte is slightly larger at 1,099,511,627,776 bytes (about 10% more).The gap grows at each level because you're compounding the 1,000 vs 1,024 difference.
The Decimal (Base - 10) naming (KB, MB, GB, TB etc.) is as per SI (International System of Units) specification, whereas IEC introduced the binany (KiB, MiB, GiB, TiB etc.) naming convention in 1998 to avoid the ambiguity between the two systems of storage volume.
IEC Base - 2 namings are more appropriate in scenarios where precise, binary-based measurements of data are required, such as in operating system disk management, file systems, or memory computations.
You can search for Base-10 to Base-2 (and vice-Versa) converter to calculate the storage space value from one unit to another.
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