Updated: 06/30/2019 by Computer Hope
Various items on a desktop.

Gigabyte may refer to any of the following:

1. Short for gigabyte, GB or GByte is a unit of digital information equal either to 1,073,741,824 (230) bytes, or 1,000,000,000 (109) bytes. Many hard drive manufacturers and computer manufacturers list what they consider a gigabyte in the fine print.


When the "b" is lowercase, like Gb, this refers to a gigabit.

What comes before a gigabyte?

A megabyte comes before a gigabyte.

What comes after a gigabyte?

A terabyte comes after a gigabyte.

Gigabyte vs. other data measurements

Below is a listing of gigabyte values where a gigabyte is considered 1,000,000,000 (109) bytes. See our gibibyte definition for a listing of gigabyte values where a gigabyte is equal to 1,073,741,824 (230) bytes.

GB (gigabyte) Value
Gigabyte in a Bit (b) 0.000000000125
Gigabyte in a Nibble (N) 0.000000001
Gigabyte in a Byte (B) 0.000000001
Gigabyte in a Kilobit (Kb) 0.000000125
Gigabyte in a Kilobyte (KB) 0.000001
Gigabyte in a Kibibit (Kib) 1.279918085e-07
Gigabyte in a Kibibyte (KiB) 1.023999476e-06
Gigabyte in a Megabit (Mb) 0.000125
Gigabyte in a Megabyte (MB) 0.001
Gigabyte in a Mebibit (Mib) 0.0001310720778
Gigabyte in a Mebibyte (MiB) 0.001048576348
Gigabyte in a Gigabit (Gb) 0.125
Gigabyte in a Gigabyte (GB) 1
Gigabyte in a Gibibit (Gib) 0.134218
Gigabyte in a Gibibyte (GiB) 1.07374
Gigabytes in a Terabit (Tb) 125
Gigabytes in a Terabyte (TB) 1,000
Gigabytes in a Tebibit (Tib) 137.439
Gigabytes in a Tebibyte (TiB) 1,099.51
Gigabytes in a Petabit (Pb) 125,000
Gigabytes in a Petabyte (PB) 1,000,000
Gigabytes in a Pebibit (Pib) 140,737
Gigabytes in a Pebibyte (PiB) 1,126,000
Gigabytes in an Exabit (Eb) 125,000,000
Gigabytes in an Exabyte (EB) 1,000,000,000
Gigabytes in an Exbibit (Eib) 144,115,188
Gigabytes in an Exbibyte (EiB) 1,152,921,500
Gigabytes in a Zettabyte (ZB) 1,000,000,000,000
Gigabytes in a Yottabyte (YB) 1,000,000,000,000,000

2. Gigabyte Technology is a manufacturer of motherboards, GPUs, and other computer hardware. For more information, see our Gigabyte company information page.

Byte, Computer abbreviations, GB, MB, Measurements