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Digital

Digital Storage Conversion Table

Values shown for 1 Byte

About Digital Storage Conversions

Storage units confuse people because decimal (SI) and binary (IEC) prefixes have overlapped for decades. Manufacturers sell in decimal: 1 GB = 1,000,000,000 bytes. Operating systems long counted in binary: 1 GiB = 1,073,741,824 bytes. That 7.4% gap widens with every step up, which is why a '1 TB' drive reads as roughly 931 GiB in your file manager. The IEC defined unambiguous binary prefixes (kibi-, mebi-, gibi-) in 1999, but they never fully caught on. Decimal and binary stay apart below, so a spec sheet and a file manager finally agree.

Unit NameSymbolValueFormula
Bitb8divide by 8
ByteB1base unit
GibibyteGiB9.31323 × 10⁻¹⁰multiply by 1,073,741,824 (1024³)
GigabyteGB1 × 10⁻⁹multiply by 1,000,000,000
KibibyteKiB0.000976563multiply by 1024
KilobyteKB0.001multiply by 1000
MebibyteMiB9.53674 × 10⁻⁷multiply by 1,048,576 (1024²)
MegabyteMB0.000001multiply by 1,000,000
PetabytePB1 × 10⁻¹⁵multiply by 1,000,000,000,000,000
TebibyteTiB9.09495 × 10⁻¹³multiply by 1,099,511,627,776 (1024⁴)
TerabyteTB1 × 10⁻¹²multiply by 1,000,000,000,000

Sources

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