Updated: 03/05/2023 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 to 1,073,741,824 (230) bytes or 1,000,000,000 (109) bytes. Many hard drive 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. Using this chart, you can find how many gigabytes are in other measurements. For example, you can see 1,000 gigabytes in a terabyte. For measurements that are smaller than a gigabyte, the decimal value is shown.


See our gibibyte definition for a listing of gigabyte values where a gigabyte equals 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
Gigabyte logo

2. Gigabyte Technology manufacturers motherboards, GPUs, and other computer hardware. For more information, see our Gigabyte company information page.

Byte, Computer abbreviations, GB, MB, Measurements, Storage device